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71x+30x=450+3x
We move all terms to the left:
71x+30x-(450+3x)=0
We add all the numbers together, and all the variables
71x+30x-(3x+450)=0
We add all the numbers together, and all the variables
101x-(3x+450)=0
We get rid of parentheses
101x-3x-450=0
We add all the numbers together, and all the variables
98x-450=0
We move all terms containing x to the left, all other terms to the right
98x=450
x=450/98
x=4+29/49
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