Question

Solve y=x-2 and x+y=12 using substitution

Answer 1

Explanation:

y=x-2....eqn1

x+y=12.....eqn2

now,

from eqn 1

y= x-2

again, putting value of y in eqn 2

• x+y=12
• x+x-2=12
• 2x=12+2
• x=14/2
• x=7

in eqn 1

• y=x-2
• y=7-2
• y=5

hope it helps..