Question

solve by carmer's rule
2x+3y=42
5x-y=20

Answer 1

Step-by-step explanation:

this is the answer

hope its helpful

Answer 2

Answer:

2x+3y=42______1 equation

5x-y=20______2 equation

multiply 1 equation by5

10x+15y=210______3 equation

multiply 2 equation by2

10x-2y=40_______ 4equation

subtracting equation 4equation from 3equation

10x+25y=210

10x - 2y= 40

__________

27y=170

y=170/27

put value y into 2equation

5x-170/27=20

5x=20+170/27

5x=710/27

x=710/27×1/5

x=143/27