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Solve for x:
6.8x=-3.9-(-8.9x-1)-2x

X = 29
explanation:
when there is a - in front of parentheses, change the signs in the expression:
6.8x = -3.9 + 8.9x + 1 - 2x
then, calculate the sum:
6.8x = -2.9 + 8.9x -2x
and combine like terms:
6.8x = -2.9 + 6.9x
now, work on isolating the variable! to start, move the variable to the left-hand side of the equation and change its sign.
6.8x - 6.9x = -2.9
and combine like terms once again:
-0.1x = -2.9
now divide both sides of the equation by -0.1. any expression divided by itself equals 1.
x = 29!