Solve the equation

Question

15.3 + 15 + 15.4 + 15.7 + x /5 = 15.4

thankyou

Answer 1

I suspect you mean...

(15.3 + 15 + 15.4 + 15.7 + x) /5 = 15.4

multipy both sides by 5.
15.3 + 15 + 15.4 + 15.7 + x = 15.4 *5
then subtract the four numbers on the left from both sides.