7+3x+4x=-21

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Solution for 7+3x+4x=-21 equation:


7+3x+4x=-21

We simplify the equation to the form, which is simple to understand 
7+3x+4x=-21

We move all terms containing x to the left and all other terms to the right. 
+3x+4x=-21-7

We simplify left and right side of the equation. 
+7x=-28

We divide both sides of the equation by 7 to get x. 
x=-4

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