Найдите корень уравнения: А)9+4(2х-2)=-15 Б)3(4х-3)-2х=76
9 + 4 * ( 2X - 2 ) = - 15 9 + 8X - 8 = - 15 8X = - 15 - 1 8X = - 16 X = - 16 : 8 X = - 2 ----------------------------- 3 * ( 4X - 3 ) - 2X = 76 12X - 9 - 2X = 76 10X = 76 + 9 10X = 85 X = 85 : 10 X = 8,5
А) 9+4(2х-2)=-15 13(2х-2)=-15 2х-2=-15-13 2х-2=-28 2х=-28+2 2х=-26 х=-26:2 х=-13