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4x+2+4x=90
We simplify the equation to the form, which is simple to understand
4x+2+4x=90
We move all terms containing x to the left and all other terms to the right.
+4x+4x=+90-2
We simplify left and right side of the equation.
+8x=+88
We divide both sides of the equation by 8 to get x.
x=11
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