Question

x and
Solve for
and y using subsifitation method
x+2y-3= 0 ; 3x - 2y +7=0​

Answer 1

Answer:

x+2y-3=0 (1)

3x-2y+7=0 (2)

BY (1),

x=3-2y (3)

SUBSTITUTING IN (2)

3(3-2y)-2y+7 = 0

9-6y-2y+7 = 0

9-8y+7 = 0

16-8y = 0

-8y = -16

8y = 16

y = 16/8

y = 2 (4)

SUBSTITUTING IN (3)

x = 3-2*2

x = 3-4

x = -1