5x+4x=80+100

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Solution for 5x+4x=80+100 equation:



5x+4x=80+100
We move all terms to the left:
5x+4x-(80+100)=0
We add all the numbers together, and all the variables
5x+4x-180=0
We add all the numbers together, and all the variables
9x-180=0
We move all terms containing x to the left, all other terms to the right
9x=180
x=180/9
x=20

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