1. (8-5x)-4x=8-9x
2. -1*(-10c+7)+7=-1*(-10c)-1*7+7=10c
1) (8-5х)-4х=0
2)-1×(-10с+7)+7=-4с
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Answers & Comments
1. (8-5x)-4x=8-9x
2. -1*(-10c+7)+7=-1*(-10c)-1*7+7=10c
1) (8-5х)-4х=0
2)-1×(-10с+7)+7=-4с