1) 2x+3y+4(y-5x)=
1) (3m+4n)+(6n-9m):3=
3) 20x-(16x-8y+10): (-4)=
4) 9(a-c)+(12c-8a-6): (-2) =
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1) 2x+3y+4(y-5x)=2x+3y+4y-20x=-18x+7y
2) (3m+4n)+(6n-9m):3=3m+4n+2n-3m=6n
3) 20x-(16x-8y+10):(-4)=20x+4x+2x-2,5=26x-2,5
4) 9(a-c)+(12c-8a-6):(-2) =9a-9c-6c+4a+3=13a-15c+3
1) 2x+3y+4(y+5x)=2x+3y+4y+20x=18x+7y
1) (3m+4n)+(6n-9m):3=3m+4n+2n-3m=6n
3) 20x-(16x-8y+10): (-4)=20x-4x+2x-2,5=26x-2,5
4) 9(a-c)+(12c-8a-6): (-2) =9a-9c-6c+4a+3=13a-15c+3