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x-0.7x=154
We move all terms to the left:
x-0.7x-(154)=0
We add all the numbers together, and all the variables
0.3x-154=0
We move all terms containing x to the left, all other terms to the right
0.3x=154
x=154/0.3
x=513+0.099999999999994/0.3
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