X + y = 4 x - 2y = -5 If the first equation is multiplied by 2 and then the equations are added, the result is _____. 3x = 13 3x = 3 x = 3

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asked Oct 15, 2020 156k views

2 Answers

Jake Kurzer · Answer 1 · 2020-10-19T07:06:36+0000

Here's how you solve this problem:

1) Multiply the first equation by 2 (result:2x+2y=8).

2) Add both equations together (result:2x+x+2y-2y=8-5)

3) Simplify (result:3x=3)

The answer is 3x=3.

This could be simplified more, however, to equal x=1, since both sides are divisible by 3.

p.s. Have a good day!