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19x+3+30=90
We simplify the equation to the form, which is simple to understand
19x+3+30=90
We move all terms containing x to the left and all other terms to the right.
+19x=+90-3-30
We simplify left and right side of the equation.
+19x=+57
We divide both sides of the equation by 19 to get x.
x=3
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