21x=10x+21+8x=270

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Solution for 21x=10x+21+8x=270 equation:



21x=10x+21+8x=270
We move all terms to the left:
21x-(10x+21+8x)=0
We add all the numbers together, and all the variables
21x-(18x+21)=0
We get rid of parentheses
21x-18x-21=0
We add all the numbers together, and all the variables
3x-21=0
We move all terms containing x to the left, all other terms to the right
3x=21
x=21/3
x=7

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