Solve 87.7=(x*56)+(x*87)+(81-2x*88)

$$87.7 = ( x \times 56 ) + ( x \times 87 ) + ( 81 - 2 x \times 88 )$$

Solve for x

$$x=-\frac{67}{330}\approx -0.203030303$$

Steps for Solving Linear Equation

Combine x\times 56 and x\times 87 to get 143x.

$$87.7=143x+81-2x\times 88$$

Multiply 2 and 88 to get 176.

$$87.7=143x+81-176x$$

Combine 143x and -176x to get -33x.

$$87.7=-33x+81$$

Swap sides so that all variable terms are on the left hand side.

$$-33x+81=87.7$$

Subtract 81 from both sides.

$$-33x=87.7-81$$

Subtract 81 from 87.7 to get 6.7.

$$-33x=6.7$$

Divide both sides by -33.

$$x=\frac{6.7}{-33}$$

Expand \frac{6.7}{-33} by multiplying both numerator and the denominator by 10.

$$x=\frac{67}{-330}$$

Fraction \frac{67}{-330} can be rewritten as -\frac{67}{330} by extracting the negative sign.

$$x=-\frac{67}{330}$$