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140+0.30x-0.30=50+0.60-0.70
We move all terms to the left:
140+0.30x-0.30-(50+0.60-0.70)=0
We add all the numbers together, and all the variables
0.30x+140-0.30-(49.9)=0
We add all the numbers together, and all the variables
0.30x+89.8=0
We move all terms containing x to the left, all other terms to the right
0.30x=-89.8
x=-89.8/0.30
x=-299+0.099999999999994/0.30
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