Question

LEVEL
Solve the following systems of equations:
1. 11x + 15y + 23 = 0
7x - 2y - 20 = 0​

Answer 1

Answer:

7x-2y-20=0

7x-2y =20

x = 20+2y/7 –––eqn.1

11x+15y+23=0–––eqn.2

by (1)&(2)

11(20+2y/7)+15y+23=0

220+22y/7+15y+23=0

220+22y+105y/7 =-23

220+127y =-23(7)

127y=-161-220

y =-381/127

y= -3

so. x=20+2(-3)/7

x=20-6/7

x=14/7

x=2

i hope u got that

Answer 2

Answer:

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