What is 7x-9 y/2-2x+4/2 =-15,5(x-1+y)=25 ?

The solution to 7x-9 y/2-2x+4/2 =-15,5(x-1+y)=25 is x= 20/19 ,y= 94/19

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7x-9 y/2-2x+4/2 =-15,5(x-1+y)=25

7 x - 9 \frac{y}{2} - 2 x + \frac{4}{2} = - 15, 5 (x - 1 + y) = 25

x = \frac{20}{19}, y = \frac{94}{19}

Solution steps

[7 x - 9 \cdot \frac{y}{2} - 2 x + \frac{4}{2} = - 15 5 (x - 1 + y) = 25]

Isolate

x

for

5 (x - 1 + y) = 25 : x = - y + 6

Substitute

x = - y + 6

[7 (- y + 6) - 9 \cdot \frac{y}{2} - 2 (- y + 6) + \frac{4}{2} = - 15]

Simplify

[- \frac{19 y}{2} + 32 = - 15]

Isolate

y

for

- \frac{19 y}{2} + 32 = - 15 : y = \frac{94}{19}

For

x = - y + 6

Substitute

y = \frac{94}{19}

x = - \frac{94}{19} + 6

- \frac{94}{19} + 6 = \frac{20}{19}

x = \frac{20}{19}

The solutions to the system of equations are:

x = \frac{20}{19}, y = \frac{94}{19}

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

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

2 x + 3 y - z = 18, x - 2 y + 4 z = 21, 3 x - y - 3 z = 3

2 x + 4 y = 7, 3 x - 6 y = 10

2 x + 4 y = 16, 4 x + 3 y = 24

What is 7x-9 y/2-2x+4/2 =-15,5(x-1+y)=25 ?
The solution to 7x-9 y/2-2x+4/2 =-15,5(x-1+y)=25 is x= 20/19 ,y= 94/19