Решите,пожалуйста, уравнения 4x+(3-2x)=15 30x= -6 -6x = -12
4х+(3-2х)=15 4х+3-2х=15 2х=15-3 2х=12 х=6 30х=-6 х=-6:30 х=-0.2 -6=-12х х=6:12 х=0.5
1) 4x+(3-2x)=15
4x + 3 -2x = 15
4x - 2x = 15 - 3
2x = 12
x = 6
2) 30x = -6
x = -6 * 1/30
x = -0,2
3) -6x = -12
x = -12 * ( -1/6 )
x = 2