Seven more than the product of four plus a number and five equals 63

Question

Seven more than the product of four plus a number and five equals 63

Answer 1

If we let x represent the number, then we can write four plus a number as (4 +x).

Then the product of (4 + x)and five can be written as 5(4+x)

Then add 7 more than this product:

7 + 5(4+x)

Lastly, set this expression equal to 63

7 + 5(4+x) = 63

You can solve this equation for x using inverse operations and the distributive property:

7 + 5(4+x) = 63

7 + 20 + 5x = 63

27 + 5x = 63

27 + 5x - 27 = 63 - 27

5x = 36

x = 7.2