Math, asked by ay714766, 1 month ago

For 3x-8y=5,x+2y=1 please need it fast

Answers

Answered by BLAZE1001
0

Answer:

x= 9/7 and y= -1/7

Step-by-step explanation:

3x-8y=5••••> 1

x+2y=1••••••>2

equation 2 multiplied by 3 so that x can be cancelled =

3x+6y=3••••>3

substract equation 3 from 1

we get (3x-8y) - (3x+6y)= 5 -3

(3x-8y) - 3x - 6y = 2

bracket opened positive 3x got converted to negative 3x and positive 6y got converted to negative 6y.

-8y -6y = 2

-14y = 2

y = -2/14= -1/7

equate y vale in equation 2 or 3 or 1 I am using 2 for purpose of easiness.

x+2y=1

x+( -1/7 x 2) = 1

x+ -2/7 = 1

x = 1 + 2/7

x= 9/7

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