x*13+21=x*4+237

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Solution for x*13+21=x*4+237 equation: 



x*13+21=x*4+237

We move all terms to the left:

x*13+21-(x*4+237)=0

Wy multiply elements

13x-(x*4+237)+21=0

We get rid of parentheses

13x-x*4-237+21=0

We add all the numbers together, and all the variables

13x-x*4-216=0

Wy multiply elements

13x-4x-216=0

We add all the numbers together, and all the variables

9x-216=0

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

9x=216

x=216/9

x=24

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