Question

X + y = 18 y = 3x+6 i need help on this pls

Answer 1

Answer:

x=3, y = 15

Step-by-step explanation:

We can solve using the substitution method by substituting 3x+6 for y...

x+3x+6=18

Combine like terms

4x+6=18

4x=12

x=3

Now we need to find y. We can plug 3 in for x to solve for y...

y=3(3)+6

y=9+6

y=15

(x,y)=(3,15)

Answer 2

Answer:

Step-by-step explanation:

the answer and solution is on the link

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