Ta có: 2(x-5)-3(x-4)=-6+15(-3)
=>2x-10-3x+12=-6-45
=>-1x+2=-51
=>-1x=-53
=>x=53
Vậy x=53
Tìm x biết : 2 ( x - 5 ) - 3 ( x - 4 ) = - 6 + 15 ( - 3 )
2.(x-5)-3.(x-4)=-6+15.-3
2 (x − 5) − 3 (x − 4) = −51
(2x − 10) − (3x − 12) = −51
2x − 10 − 3x + 12 = −51
(2x − 3x) + (−10 + 12) = −51
−x + 2 = −51 −x = −53
x = 53
Vậy x = 53.