Solve the equations for x and y 2x-y=1 ;4x-7y=-2
Answers
2x - y= 1 4x - 7y = -2
⇒ 2x = 1 + y ⇒ 4x = -2 + 7y
⇒ x = (1 + y)/2 ⇒ (1 + y)/2 = (-2 + 7y)/4
⇒ 2 + 2y = -2 + 7y
⇒ 2 + 2 = 7y - 2y
⇒ 5y = 4
⇒ y = 4/5
If you want more exact Answer then you may also write that :
x = (1 + 4/5)/2
⇒ x = [(5 + 4)/5]/2
⇒ x = 9/5 * 1/2
⇒ x = 9/10
⇒ x = 0.9
Answer : x = 0.9 and y = 4/5
Answer:
1) x=, y=-1x 2) x=, y=
Step-by-step explanation:
1) 2x-y=1
2x=1+y
x=
2x-y=1
y=1-2x
y=-1x
2) 4x-7y=-2
4x=-2+7y
4x=5y
x=
4x-7y=-2
-7y=-2-4x
-7y=-6x
y=
hope this helps :) plz mark me as brainliest :(