Solve 60+0.7*0.8y+320+600+420-0.06y=7

$$60 + 0.7 \times 0.8 y + 320 + 600 + 420 - 0.06 y = 7$$

Solve for y

$$y=-2786$$

Steps for Solving Linear Equation

Multiply 0.7 and 0.8 to get 0.56.

$$60+0.56y+320+600+420-0.06y=7$$

Add 60 and 320 to get 380.

$$380+0.56y+600+420-0.06y=7$$

Add 380 and 600 to get 980.

$$980+0.56y+420-0.06y=7$$

Add 980 and 420 to get 1400.

$$1400+0.56y-0.06y=7$$

Combine 0.56y and -0.06y to get 0.5y.

$$1400+0.5y=7$$

Subtract 1400 from both sides.

$$0.5y=7-1400$$

Subtract 1400 from 7 to get -1393.

$$0.5y=-1393$$

Divide both sides by 0.5.

$$y=\frac{-1393}{0.5}$$

Expand \frac{-1393}{0.5} by multiplying both numerator and the denominator by 10.

$$y=\frac{-13930}{5}$$

Divide -13930 by 5 to get -2786.

$$y=-2786$$