Hey there!
[tex] 0.7(x- 9) - 0.9(-9) = (-0.2) + 1.8 \\ Distribute: 0.7(x) + 0.7(-9) =(-0.2) + 2 \\ 0.7(x) = 0.7x \\ 0.7(-9) = -6.3 \\ -0.9(-9) = 8.1 \\ 0.7x + (-6.3) +8.1= -0.2+ 1.8 \\ LikeTerms: 0.7x , \\ -6.3 , 8.1 \\ -0.2,1.8 \\ 0.7x + (-6.3) + 8.1= (-0.2) +1.8 \\ Subtract: 1.8 \\ 0.7x + 1.8 -18 \\ = 1.6-1.8 \\ = 0.7c = -0.2 \\ \\ Divide: 0.7 \\ \frac{0.7x}{0.7} = \frac{-0.2}{0.7} \\ \\ \\ \\ Answer: x = -0.285714 [/tex]
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