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2.3+.02(x+20)-4.8=-9
We move all terms to the left:
2.3+.02(x+20)-4.8-(-9)=0
We add all the numbers together, and all the variables
.02(x+20)+6.5=0
We multiply parentheses
0.02x+0.4+6.5=0
We add all the numbers together, and all the variables
0.02x+6.9=0
We move all terms containing x to the left, all other terms to the right
0.02x=-6.9
x=-6.9/0.02
x=-345
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