Question

{[(5*x-18):3+13]*7-54}:25=4

Answer 1

{[(5 * x - 18) : 3 + 13] * 7 - 54} : 25 = 4
[(5 * x - 18) : 3 + 13] * 7 - 54 = 4 * 25
[(5 * x - 18) : 3 + 13] * 7 = 100 + 54
(5x - 18) : 3 + 13 = 154 : 7
(5x - 18) : 3 = 22 - 13
5x - 18 = 9 * 3
5x = 27 + 18
5x = 45
x = 45 : 5x = 9

Answer 2

{[(5*x-18):3+13]*7-54}:25=4 /*25
[(5*x-18):3+13]*7-54=100 /+54
[(5*x-18):3+13]*7=154 /:7
(5*x-18):3+13=22 /-13
(5*x-18):3=9 /*3
5*x-18=27 /+18
5*x=45 /:5
x=9

Sper ca te-am ajutat!