x*4+21=133

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Solution for x*4+21=133 equation: 



x*4+21=133

We move all terms to the left:

x*4+21-(133)=0

We add all the numbers together, and all the variables

x*4-112=0

Wy multiply elements

4x-112=0

We move all terms containing x to the left, all other terms to the right

4x=112

x=112/4

x=28

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