Answer :
To solve the problem "The sum of a number and 7 is 15," let's break it down step by step:
1. Start by letting the unknown number be represented by a variable, such as [tex]\( x \)[/tex].
2. Based on the problem statement, we can express the relationship using an equation:
[tex]\[ x + 7 = 15 \][/tex]
3. Now, we need to solve for [tex]\( x \)[/tex]. To do this, find the value of [tex]\( x \)[/tex] that makes the equation true.
4. To isolate [tex]\( x \)[/tex], subtract 7 from both sides of the equation:
[tex]\[ x + 7 - 7 = 15 - 7 \][/tex]
5. Simplifying both sides gives:
[tex]\[ x = 8 \][/tex]
So, the number we are looking for is 8. Therefore, the solution to the equation is [tex]\( x = 8 \)[/tex].
1. Start by letting the unknown number be represented by a variable, such as [tex]\( x \)[/tex].
2. Based on the problem statement, we can express the relationship using an equation:
[tex]\[ x + 7 = 15 \][/tex]
3. Now, we need to solve for [tex]\( x \)[/tex]. To do this, find the value of [tex]\( x \)[/tex] that makes the equation true.
4. To isolate [tex]\( x \)[/tex], subtract 7 from both sides of the equation:
[tex]\[ x + 7 - 7 = 15 - 7 \][/tex]
5. Simplifying both sides gives:
[tex]\[ x = 8 \][/tex]
So, the number we are looking for is 8. Therefore, the solution to the equation is [tex]\( x = 8 \)[/tex].
