Question

1-5(2x-5)-3(2-3x)=4x
Срочно

Answer 1

1-5(2x-5)-3(2-3х)=4х
1 - 5*2х - 5*(-5) - 3*2 - 3*(-3х)=4х
1- 10х + 25- 6 + 9х =4х
1+25-6-10х+9х=4х
20-х=4х
20=4х+х
20=5х
х=20/5
х=4
Проверка
1-5(2*4-5)-3(2-3*4)=1-5(8-5)-3(2-12)=1-5*3-3*(-10)=1-15+30=16
4*4=16
16=16