упростите выражение:
1)b + (7 - b) - (14 + b)
2)-2*(x - 3) + 6 (x + 1)
1)b + (7 - b) - (14 + b)
2)-2*(x - 3) + 6 (x + 1)
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b + (7 - b) - (14 + b) =b+7-b-14-b=-b-7=-(b+7)-2*(x - 3) + 6 (x + 1)=-2х+6+6х+6=4х+12=4(х+3)
b+7-b-14+b
2. Упростим:
b-7