(x+4)+(3x+21)=-3

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Solution for (x+4)+(3x+21)=-3 equation:



(x+4)+(3x+21)=-3
We move all terms to the left:
(x+4)+(3x+21)-(-3)=0
We add all the numbers together, and all the variables
(x+4)+(3x+21)+3=0
We get rid of parentheses
x+3x+4+21+3=0
We add all the numbers together, and all the variables
4x+28=0
We move all terms containing x to the left, all other terms to the right
4x=-28
x=-28/4
x=-7

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