Ответ:
А) 3х-5-(7х-3) = 3х - 5-7х+3 = - 4х-2 = - 2(2х+1)
Б) 12х-8-8х+2-4х+9=12х - 8х - 4х - 8 +2+9=3
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Ответ:
А) 3х-5-(7х-3) = 3х - 5-7х+3 = - 4х-2 = - 2(2х+1)
Б) 12х-8-8х+2-4х+9=12х - 8х - 4х - 8 +2+9=3