3x(-7)=-21

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Solution for 3x(-7)=-21 equation:



3x(-7)=-21
We move all terms to the left:
3x(-7)-(-21)=0
We add all the numbers together, and all the variables
3x(-7)+21=0
We multiply parentheses
-21x+21=0
We move all terms containing x to the left, all other terms to the right
-21x=-21
x=-21/-21
x=1

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