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7(6x+9)=42x+63
We simplify the equation to the form, which is simple to understand
7(6x+9)=42x+63
Reorder the terms in parentheses
+(+42x+63)=42x+63
Remove unnecessary parentheses
+42x+63=+42x+63
We move all terms containing x to the left and all other terms to the right.
+42x-42x=+63-63
We simplify left and right side of the equation.
0x=0
0=0
This equation is an identity, so all real numbers are solutions.
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