Question

Y=2x-5 x+y=7 solve by elimination

Answer 1

x = 4

y = 3

Explanation:

First, reorder the first equation to make it into the same format as the second equation:

y = 2x - 5

-2x + y = -5

Then, put the equations together:

-2x + y = -5

x + y = 7

Solve by elimination by multiplying the bottom equation by 2, then add the equations together and solve for y:

-2x + y = -5

2x + 2y = 14

3y = 9

y = 3

Then, plug in 3 as y into one of the equations to solve for x:

y = 2x - 5

3 = 2x - 5

8 = 2x

4 = x

So, the answer is x = 4 and y = 3