Question

PLS HELP NEED HELP DUE

Answer 1

x = -22/21

y= 25/21

Explanation:

-x+5y-7x=0

4y-10=5x

(-x-5y-7)+7=0

(-4y-10)+(10-5x)= 5x+(10-5x)

x =-22/21

y = 25/21

Answer 2

Explanation:

-x + 5y - 7 = 0

-x + 5y = 7 --------------------(I)

4y - 10 = 5x

-10 = 5x - 4y

5x - 4y = -10 -----------------------(II)

-x + 5y = 7 --------------------(I)

5x - 4y = -10 -----------------------(II)

Multiply equation (I) by 5.

(I)*5 -5x + 25y = 35

(II) 5x - 4y = -10 {Now add and x will be eliminates}

21y = 25

y = 25/21

Substitute y value in Equation (I)

-x + 5*25/21 = 7

-x + 125/21 = 7

-x = 7 - (125/21)

-x = (147/21) - (125/21)

-x = (147-125)/21

-x = 22/21

x = -22/21