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6y+x-28xy
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6y+x-28xy
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x-4x^{2}+6y-24yx-4x\left(y-x\right)
Apply the distributive property by multiplying each term of x+6y by each term of 1-4x.
x-4x^{2}+6y-24yx-4xy+4x^{2}
Use the distributive property to multiply -4x by y-x.
x-4x^{2}+6y-28yx+4x^{2}
Combine -24yx and -4xy to get -28yx.
x+6y-28yx
Combine -4x^{2} and 4x^{2} to get 0.
x-4x^{2}+6y-24yx-4x\left(y-x\right)
Apply the distributive property by multiplying each term of x+6y by each term of 1-4x.
x-4x^{2}+6y-24yx-4xy+4x^{2}
Use the distributive property to multiply -4x by y-x.
x-4x^{2}+6y-28yx+4x^{2}
Combine -24yx and -4xy to get -28yx.
x+6y-28yx
Combine -4x^{2} and 4x^{2} to get 0.
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