Ответ:
3b +( 5a - 7b) = 3b + (-2 b) = 1
-(8c - 4) +4 = -8c +4 +4 = -8c +8
(2 + 3x) + (7x -2) = 2 + 3x + 7x - 2 = 10x
15 - 5( 1-a) - 6a = 15 - 5 +5a - 6a = 10 - a
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Ответ:
3b +( 5a - 7b) = 3b + (-2 b) = 1
-(8c - 4) +4 = -8c +4 +4 = -8c +8
(2 + 3x) + (7x -2) = 2 + 3x + 7x - 2 = 10x
15 - 5( 1-a) - 6a = 15 - 5 +5a - 6a = 10 - a