Question

[Bùi Khánh Ly]

a,-12(x-5)+7(3-x)=5

b,-12x-(-12).5+7.3-7.x=5

c,30(x+2)-6(x-3)-24.x=100

Answer 1

[Hoàng Thảo]

a) \(-12\left(x-5\right)+7\left(3-x\right)=5\)

\(-12x+60+21-7x=5\)

\(-19x=5-60-21\)

\(-19x=-76\)

\(x=4\)

vậy \(x=4\)

tương tự