College

1. Simplify the following expressions:

(a) [tex]5 + \frac{60}{4} - 7[/tex]

(b) [tex]90 + \frac{30}{6} - 7 \times 5[/tex]

(c) [tex]12 \times 5 + \frac{25}{5} + 4[/tex]

(d) [tex]15 \times 5 \div 5 + 20 - 4[/tex]

(e) [tex]\frac{128}{4 + \{12 \times (5-4)\}} + 6[/tex]

2. Simplify:

(a) [tex]50 \div 5 + 3 - 7[/tex]

(b) [tex]\frac{10}{5} + 2 + 6 - 3 \times 5[/tex]

(c) [tex]\frac{60}{12} + 5 \times 8 - 5[/tex]

(d) [tex]\frac{200}{50} - 6 \times 7 + 8[/tex]

(e) [tex]20 \times \{40 - 6 \times (7-2)\} + 16[/tex]

3. Simplify:

(a) [tex]3 - \{12 \div 3 + (-4) \times (-2) + 5\}[/tex]

(b) [tex]14 \div 2 - [17 \times \{14 - (15 \div 3)\}][/tex]

(c) [tex]14 \times 2 \div 70 \times \{12 - (3+2)\}[/tex]

(d) [tex]3 - \{12 \div [26 - 4 \times (7 - \overline{8-6})]\}[/tex]

(e) [tex]\frac{30}{25 - 3 \times (10 - \overline{3+2})}[/tex]

(f) [tex]14 - [15 \times 2 - \{84 \div 6 \times (8 - 3 + 2)\}][/tex]

Provide your answers to your teacher.

Answer :

Sure, let's break down each expression and simplify it step by step:

### Simplify Part 5:

(a) 50 of 5 ÷ 10 + 3 - 7

1. First, calculate [tex]\(50 \times \left(\frac{5}{10}\right)\)[/tex].
- [tex]\(5 \div 10 = 0.5\)[/tex]
- [tex]\(50 \times 0.5 = 25\)[/tex]

2. Add 3 and subtract 7 from the result:
- [tex]\(25 + 3 = 28\)[/tex]
- [tex]\(28 - 7 = 21\)[/tex]

So, the simplified result is 21.

(b) 10 ÷ 5 of 2 + 6 - 3 of 5

1. Start with [tex]\(10 \div 5\)[/tex].
- [tex]\(10 \div 5 = 2\)[/tex]

2. Calculate [tex]\(2 \times 2\)[/tex].
- [tex]\(2 \times 2 = 4\)[/tex]

3. Work out [tex]\(3 \times 5\)[/tex].
- [tex]\(3 \times 5 = 15\)[/tex]

4. Finally, add 6 and subtract 15:
- [tex]\(4 + 6 = 10\)[/tex]
- [tex]\(10 - 15 = -5\)[/tex]

So, the simplified result is -5.

(c) 60 ÷ 12 + 5 of 8 - 5

1. Begin with [tex]\(60 \div 12\)[/tex].
- [tex]\(60 \div 12 = 5\)[/tex]

2. Calculate [tex]\(5 \times 8\)[/tex] (5 of 8).
- [tex]\(5 \times 8 = 40\)[/tex]

3. Add 5 and subtract 5:
- [tex]\(5 + 40 = 45\)[/tex]
- [tex]\(45 - 5 = 40\)[/tex]

So, the simplified result is 40.

(d) 200 ÷ 50 - 6 of 7 + 8

1. Start with [tex]\(200 \div 50\)[/tex].
- [tex]\(200 \div 50 = 4\)[/tex]

2. Calculate [tex]\(6 \times 7\)[/tex] (6 of 7).
- [tex]\(6 \times 7 = 42\)[/tex]

3. Subtract 42 and add 8:
- [tex]\(4 - 42 = -38\)[/tex]
- [tex]\(-38 + 8 = -30\)[/tex]

So, the simplified result is -30.

(e) [tex]\([20 \times \{40 - 6(7 - 2)\}] + 16\)[/tex]

1. Calculate inside the parentheses first: [tex]\(7 - 2 = 5\)[/tex].

2. Then, calculate [tex]\(6 \times 5\)[/tex].
- [tex]\(6 \times 5 = 30\)[/tex]

3. Subtract 30 from 40:
- [tex]\(40 - 30 = 10\)[/tex]

4. Multiply 20 by the result:
- [tex]\(20 \times 10 = 200\)[/tex]

5. Finally, add 16:
- [tex]\(200 + 16 = 216\)[/tex]

So, the simplified result is 216.

I hope this detailed explanation helps you understand the simplification process! If you have any further questions, feel free to ask.