Question

Ten less than four times a certain number is 18. Determine the number.

Answer 1

with soultion and checking

Answer 2

let x= certain number

4x-10=18
Because it is said that 10 less than four times the certain number (x) is 18.

Then transpose and solve the operations
4x=18+10

Divide both sides by 4
4x=28
x=7

If we check,
4(7)-10= 18
18=18 :D