10x = 4(2x -9)
10x = 8x - 36
10x - 8x = -36 - 8x
2x = -36
2x ÷ 2 = -36 ÷ 2
x = -18
If you need a better explanation just as in the comments.
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Answer:
This is verry easy! Is 105.56,do u need expabation?
Answer:

Hope this helps! If you need an explanation, I've got you.
I think the answer is c= 0.248
-7x + 6 = 27
-7x = 21 (Subtract 6 from both sides)
x = -3 (Divide -7 from both sides)