Question

How do you solve x+y=12 and y=2x using substitution?

Answer 1

Answer:

Given:x+y=12. 1

We know that

y=2x

Step-by-step explanation:

Substituting the value of y in eq 1

x+2x=12

3x=12

x=12/3

x=4

Therefore

y=2x

y=2*4=8