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(3*4x)+5x=850
We move all terms to the left:
(3*4x)+5x-(850)=0
We add all the numbers together, and all the variables
(+3*4x)+5x-850=0
We add all the numbers together, and all the variables
5x+(+3*4x)-850=0
We get rid of parentheses
5x+3*4x-850=0
Wy multiply elements
5x+12x-850=0
We add all the numbers together, and all the variables
17x-850=0
We move all terms containing x to the left, all other terms to the right
17x=850
x=850/17
x=50
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