Question

2x – 45 = y 2y – 21 = x by elimation

Answer 1

Answer:

2x-45=y - eq 1

2y-21=x - eq 2

from equation 1

2x-45=y

2x=y+45

x=y+45/2 - eq3

by putting the value of x in equation2

2y-21=x

2y-2=y+45/2

y=45/2+2

y=49/2

by putting the value of x in equation3

x=y+45/2

x=49/2+45/2

x=94/2