x(5-3x)+3x(x+1)-40=0

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Solution for x(5-3x)+3x(x+1)-40=0 equation: 



x(5-3x)+3x(x+1)-40=0

We add all the numbers together, and all the variables

x(-3x+5)+3x(x+1)-40=0

We multiply parentheses

-3x^2+3x^2+5x+3x-40=0

We add all the numbers together, and all the variables

8x-40=0

We move all terms containing x to the left, all other terms to the right

8x=40

x=40/8

x=5

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