Question

The sum of 8 and twice a number decreased by 3 is 26. Write an equation and solve.

Answer 1

let the number be x

8+2x-3=26

collect like terms

8-3+2x=26

5+2x=26

collect like terms

+2x=26-5

2x=21

divide both sides by 2

x=21÷2

x= 10.5