Tentukan nilai variabel x A.-3(x-1)=-2(x+5) B.-4(4x-4)+5x=2x+8 C.2(5x+4)-4x=8-(2x-5)

a. -3(x-1) = -2(x+5)
= -3x +3 = -2x - 10
= -3x + 2x = -10 - 3
= -x = -13
= x = 13

b. -4(4x-4) + 5x = 2x + 8
= -16x + 16 + 5x = 2x + 8
= -16x + 5x - 2x = 8 - 16
= -13x = -8
= x = -8/-13 = 8/13

c. 2(5x+4) - 4x = 8 - (2x-5)
= 10x + 8 - 4x = 8 - (2x - 5)
= 6x + 8 = 8 - 2x + 5
= 6x + 2x = 8 + 5 - 8
= 8x = 5
= x = 5/8

Maaf jika salah