Ответ:
1: д
2: б
3: 1б, 2в, 3г, 4д
4: 9
5:
2-(2х-15) = -5(3+2х)
2-2х+15 = -15-10х
2--2х+15+15+10х= 0
8х + 32= 0
8х=-32
х= -32/8= -4
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Ответ:
1: д
2: б
3: 1б, 2в, 3г, 4д
4: 9
5:
2-(2х-15) = -5(3+2х)
2-2х+15 = -15-10х
2--2х+15+15+10х= 0
8х + 32= 0
8х=-32
х= -32/8= -4