Question

5x+37=11 ; x+2y=-5 by Cramer's rule
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Answer 1

Step-by-step explanation:

1. 5x+37=11

5x=11-37

5x= -26

2. x+2y=-5

rewrite as matrix= [ 5 ] == [-26]

[ 1 2] == [-5. ]

for. D=[ 5 ] == 8

[ 1 2]

Dx = [-26. ] == -31 +2= -29

[-5. 2]

Dy =[5. -26] == -25

[1. -5]

x= Dx/D = -29/8= -3.62

y= Dy/D = -25/8 = -3.12