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2(-x+3x)+3(-x)+7=(-x)+(-3)
We simplify the equation to the form, which is simple to understand
2(-x+3x)+3(-x)+7=(-x)+(-3)
Simplifying terms in parentheses
2*(+2x)+3*(-x)+7=(-x)+(-3)
Reorder the terms in parentheses
+(+4x)+3*(-x)+7=(-x)+(-3)
Remove unnecessary parentheses
+4x+3+*(-x+)+7=+(-x+)+(-3+)
Reorder the terms in parentheses
+4x+(-3x)+7=(-x)+(-3)
Remove unnecessary parentheses
+4x-3x+7=+(-x+)+(-3+)
Remove unnecessary parentheses
+4x-3x+7=-x+(-3)
Remove unnecessary parentheses
+4x-3x+7=-x-3
We move all terms containing x to the left and all other terms to the right.
+4x-3x+1x=-3-7
We simplify left and right side of the equation.
+2x=-10
We divide both sides of the equation by 2 to get x.
x=-5
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