21-4x=-20

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Solution for 21-4x=-20 equation:



21-4x=-20
We move all terms to the left:
21-4x-(-20)=0
We add all the numbers together, and all the variables
-4x+41=0
We move all terms containing x to the left, all other terms to the right
-4x=-41
x=-41/-4
x=10+1/4

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