0.8x+3.2-4.3x=7.7-1.2x

Combine all the like terms on one side:

0.8x-4.3x+1.2x=7.7-3.2

-2.3x=4.5

Use the division property of equality. divide both sides by - 2.3.

That leaves you with x=-1.96 (when rounded). exact: - 1.95652

On the left side of the equation we have like terms so: - 3.5x + 3.2 = - 1.2x + 7.7

Add 3.5 to each side: 3.2 = 2.3x + 7.7

Subtract 7.7 from each side: - 4.5 = 2.3x

Divide both sides by 2.3: - 1.95652174 = x

Answer: - 1.95652174