Slice the following equation;

2x-y=17

X-y=10

Question

Mathematics

Sean York

30 July, 00:55

Slice the following equation;

2x-y=17

X-y=10

+4

Answers (2)

Know the Answer?

Finnegan Stevenson · Answer 1

So 2x-y=17

x-y=10

multiply second equation by - 1

-x+y=-10

add to first equation

2x-y=17

-x+y=-10

2x-x+y-y=17-10

x=7

subsitute

7-y=10

subtract 7

-y=3

multiply - 1

y=-3

x=7

y=-3

Tessa Reyes · Answer 2

2x - y = 17 ⇒ 2x - 1y = 17

x - y = 10 ⇒ 2x - 2y = 20

y = - 3

2x - (-3) = 17

2x + 3 = 17

-3 - 3

2x = 14

2 2

x = 7

(x, y) = (7, - 3)

Slice the following equation;2x-y=17X-y=10

Slice the following equation;

2x-y=17

X-y=10