What is 2x+7y-3=5,x+4y+6=0 ?

The solution to 2x+7y-3=5,x+4y+6=0 is x=74,y=-20

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2x+7y-3=5,x+4y+6=0

2 x + 7 y - 3 = 5, x + 4 y + 6 = 0

x = 74, y = - 20

Solution steps

[2 x + 7 y - 3 = 5 x + 4 y + 6 = 0]

Isolate

x

for

2 x + 7 y - 3 = 5 : x = \frac{- 7 y + 8}{2}

Substitute

x = \frac{- 7 y + 8}{2}

[\frac{- 7 y + 8}{2} + 4 y + 6 = 0]

Simplify

[\frac{y + 8}{2} + 6 = 0]

Isolate

y

for

\frac{y + 8}{2} + 6 = 0 : y = - 20

For

x = \frac{- 7 y + 8}{2}

Substitute

y = - 20

x = \frac{- 7 ( - 20 ) + 8}{2}

\frac{- 7 ( - 20 ) + 8}{2} = 74

x = 74

The solutions to the system of equations are:

x = 74, y = - 20

7 x - 4 y = 5, 3 x - 2 y = 1

2 x + y = 5, x + 2 y = 4

w (x, z, y) + x + z = 5, y + z = 8, x + z = 2

2 x - y = 2, 2 x + y = 13

2 y - 3 x = 1, - 4 y + 6 x = - 2