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4.590=7x+9(x+40)
We move all terms to the left:
4.590-(7x+9(x+40))=0
We add all the numbers together, and all the variables
-(7x+9(x+40))+4.59=0
We calculate terms in parentheses: -(7x+9(x+40)), so:We get rid of parentheses
7x+9(x+40)
We multiply parentheses
7x+9x+360
We add all the numbers together, and all the variables
16x+360
Back to the equation:
-(16x+360)
-16x-360+4.59=0
We add all the numbers together, and all the variables
-16x-355.41=0
We move all terms containing x to the left, all other terms to the right
-16x=355.41
x=355.41/-16
x=-22+2.418439716312/11.347517730496
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