Question

solve the system of equations:
-0.4x+0.8y = 1.6
0.2x + 0.3y = 2.2

Answer 1

x=2y−4
x=11−1.5y

Answer 2

did you rearrange the equation?

Answer 3

this is what I did for the second one:

0.2x+0.3y=2.2

Since 0.3y does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 0.3y from both sides.

0.2x=−0.3y+2.2

Move all terms not containing x to the right-hand side of the equation.

0.2x=2.2−0.3y

Divide each term in the equation by 0.2.

0.2x0.2=2.20.2−0.3y0.2

Simplify the left-hand side of the equation by canceling the common factors.

x=2.20.2−0.3y0.2

Simplify the equation.