Question

Five times the sum of a number (x) and three is equal to the sum of that number (x) and fifteen.

I just need to know how to put this from Word-Form into Number form and solve for the
x. Please help.

Answer 1

5(x + 3) = x + 15....distribute
5x + 15 = x + 15...subtract x from both sides, subtract 15 from both sides
5x - x = 15 - 15
4x = 0
x = 0 <=

Answer 2

5(x+3)=x+15
its simple