Best Answer

5x+y=-7

3x+y=15

8=D

Q: How do you solve the system of equation 5x plus y equals -7 amd 3x plus y equals 15?

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You'd need another equation to sub in

5

-0.5

You cannot solve one equation in two unknowns.

y = 31

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To solve an equation with three unknowns, x, y and z, you require 3 independent equations.

You'd need another equation to sub in

k equals 5.6

you can not solve this equation

The equation does not have a solution.

5

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Solve the following equation for A : 2A/3 = 8 + 4A

You cannot solve one equation in two unknowns.

x = 6

y = 31