3x+7x-2x+4=21,4

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Solution for 3x+7x-2x+4=21,4 equation:



3x+7x-2x+4=21.4
We move all terms to the left:
3x+7x-2x+4-(21.4)=0
We add all the numbers together, and all the variables
8x-17.4=0
We move all terms containing x to the left, all other terms to the right
8x=17.4
x=17.4/8
x=2+1/5.7142857142857

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