5-(x+5)+2+(-4+x)=5-x-5+2-4+x=2
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5(6-3x)-2(-3-2x)=30-15x+6+4x=36-11x
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y-(12-3y)-6(5+y)=y-12+3y-30-6y=-2y-42
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-5(-x-9)-1,2(x+5)=5x+45-1,2x-6=3,8x-39
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-0,2(-8+5x)-15=1,6-x-15=-13,4-x
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x-6x=x(1-6)
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7k+ky-pk=k(7+y-p)
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15-5x+40y=5(3-x+8y)
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20x+15=5(4x+3)
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12y+10yx=2y(6+5x)