3+x=90-x

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Solution for 3+x=90-x equation:


3+x=90-x

We simplify the equation to the form, which is simple to understand 
3+x=90-x

We move all terms containing x to the left and all other terms to the right. 
+1x+1x=+90-3

We simplify left and right side of the equation. 
+2x=+87

We divide both sides of the equation by 2 to get x. 
x=43.5

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