Question

Tìm x thỏa mãn: -12(x-5)+7(3-x)=5
Trả lời: 

Answer 1

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

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

=>(-12x-7x)=5-(60+21)=5-84=-76

=>(-19x)=-76=>x=4

Vậy x=4

Answer 2

- 12.( x - 5 ) + 7.( 3 - x ) = 5

=> - 12x + 60 + 21 - 7x = 5

=> ( - 12x - 7x ) + 60 + 21 = 5

=> - 19x + 81 = 5

=> - 19x = 5 - 81

=> - 19x = - 76

=> x = ( - 76 ) : ( - 19 )

=> x = 4

Vậy x = 4

Answer 3

x= 4 bạn ạ