Question

solve 2x-y=5 and x+y=4​

Answer 1

Answer:

BY SUBSTITUTION METHOD:

2x-y=5.......(1)

x+y=4.........(2)

From eq(2):

x=4-y......goes to....eq(1)

2(4-y)-y=5

8-2y-y=5

8-3y=5

8-5=3y

3y=3

y=3/3

y=1..goes to eq(2)

x+1=4

x=4-1

x=3

Therefore,x=3 and y=1.......

HOPE IT HELPS YOU.....

Answer 2

Step-by-step explanation:

2x-y=5.................... (1)

x+y=4......................(2)

Adding equation (1) & (2)

2x-y=5

x + y= 4.

3x. =9

$x = \frac{9}{3}$

x=3

Substituting x=3 in equation (2)

(3)+y=4

y=4-3

y=1

Value of (x, y) =(3,1)

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