What is -2x+2y=-4,3x+3y=-18 ?

The solution to -2x+2y=-4,3x+3y=-18 is x=-2,y=-4

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-2x+2y=-4,3x+3y=-18

- 2 x + 2 y = - 4, 3 x + 3 y = - 18

x = - 2, y = - 4

Solution steps

[- 2 x + 2 y = - 4 3 x + 3 y = - 18]

Isolate

x

for

- 2 x + 2 y = - 4 : x = y + 2

Substitute

x = y + 2

[3 (y + 2) + 3 y = - 18]

Simplify

[6 y + 6 = - 18]

Isolate

y

for

6 y + 6 = - 18 : y = - 4

For

x = y + 2

Substitute

y = - 4

x = - 4 + 2

Simplify

x = - 2

The solutions to the system of equations are:

x = - 2, y = - 4

x - y = 2, - 3 x + y = 2

3 x - 4 (y - 2) = 2, 2 x + 3 (y - 3) = 4

d_{1} = 49.5 \cdot 34 h, d_{1} = 148.6

x + y = 7, 2 x + 5 y = 32

a = - 1, 2 b = 3, c = 1