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76=2x+30
We move all terms to the left:
76-(2x+30)=0
We get rid of parentheses
-2x-30+76=0
We add all the numbers together, and all the variables
-2x+46=0
We move all terms containing x to the left, all other terms to the right
-2x=-46
x=-46/-2
x=+23
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