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2.3+0.02(x+20)4.8=-9
We move all terms to the left:
2.3+0.02(x+20)4.8-(-9)=0
We add all the numbers together, and all the variables
0.02(x+20)4.8+11.3=0
We multiply parentheses
0.096x+1.92+11.3=0
We add all the numbers together, and all the variables
0.096x+13.22=0
We move all terms containing x to the left, all other terms to the right
0.096x=-13.22
x=-13.22/0.096
x=-137+0.068/0.096
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