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7.8x=3.9+3.97.811.7=x
We move all terms to the left:
7.8x-(3.9+3.97.811.7)=0
We add all the numbers together, and all the variables
7.8x-(6.153769)=0
We add all the numbers together, and all the variables
7.8x-6.153769=0
We move all terms containing x to the left, all other terms to the right
7.8x=6.153769
x=6.153769/7.8
x=5.3336231082652/6.7604520488937
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