2.3+.02(x+20)-4.9=-9

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Solution for 2.3+.02(x+20)-4.9=-9 equation: 



2.3+.02(x+20)-4.9=-9

We move all terms to the left:

2.3+.02(x+20)-4.9-(-9)=0

We add all the numbers together, and all the variables

.02(x+20)+6.4=0

We multiply parentheses

0.02x+0.4+6.4=0

We add all the numbers together, and all the variables

0.02x+6.8=0

We move all terms containing x to the left, all other terms to the right

0.02x=-6.8

x=-6.8/0.02

x=-340

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