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-9(-4)+7=25+2 (5+4)
We simplify the equation to the form, which is simple to understand
-9(-4)+7=25+2(5+4)
Simplifying terms in parentheses
-9*(-4)+7=25+2*(+9)
Reorder the terms in parentheses
+(+36)+7=25+2*(+9)
Remove unnecessary parentheses
+36+7=+25+2+*(+9+)
Reorder the terms in parentheses
+36+7=25+(+18)
Remove unnecessary parentheses
+36+7=+25+18
We move all terms containing to the left and all other terms to the right.
0=+25+18-36-7
We simplify left and right side of the equation.
0=0
0=0
This equation is an identity, so all real numbers are solutions.
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