X(5-5y)=7-2y

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Solution for X(5-5y)=7-2y equation: 



X(5-5X)=7-2X

We move all terms to the left:

X(5-5X)-(7-2X)=0

We add all the numbers together, and all the variables

X(-5X+5)-(-2X+7)=0

We multiply parentheses

-5X^2+5X-(-2X+7)=0

We get rid of parentheses

-5X^2+5X+2X-7=0

We add all the numbers together, and all the variables

-5X^2+7X-7=0

a = -5; b = 7; c = -7;
Δ = b2-4ac
Δ = 72-4·(-5)·(-7)
Δ = -91
Delta is less than zero, so there is no solution for the equation

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