What is 4s+2y=8,5s-3y=4 ?

The solution to 4s+2y=8,5s-3y=4 is s= 16/11 ,y= 12/11

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4s+2y=8,5s-3y=4

4 s + 2 y = 8, 5 s - 3 y = 4

s = \frac{16}{11}, y = \frac{12}{11}

Solution steps

[4 s + 2 y = 8 5 s - 3 y = 4]

Isolate

s

for

4 s + 2 y = 8 : s = \frac{4 - y}{2}

Substitute

s = \frac{4 - y}{2}

[5 \cdot \frac{4 - y}{2} - 3 y = 4]

Simplify

[\frac{20 - 11 y}{2} = 4]

Isolate

y

for

\frac{20 - 11 y}{2} = 4 : y = \frac{12}{11}

For

s = \frac{4 - y}{2}

Substitute

y = \frac{12}{11}

s = \frac{4 - \frac{12}{11}}{2}

\frac{4 - \frac{12}{11}}{2} = \frac{16}{11}

s = \frac{16}{11}

The solutions to the system of equations are:

s = \frac{16}{11}, y = \frac{12}{11}

\frac{3}{7 ^{x}} = 56, 7^{x} = 34

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x - 2 y = 9, 3 x + y = 41

7 x + 8 = 9, - 5 x = 17

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