First you solve for y.
5x+ y= 12 so Y= 12-5x
And plug it into the next equation
3x- 3(12-5x) = 18
Distribute
3x-36+15x=18
Add 36 to both sides
3x+ 15x= 54
18x= 54 ... divide
x= 3
And you can plug in x to solve for Y
5(3) + y = 12
15+ y = 12 ...subtract 15 from both sides
y= -3
Answer:
Step-by-step explanation:
Answer:
1) 30
2) 60
Step-by-step explanation:
1. 90 + 2x + x = 180
solve for x
x = 30
plug in 30 for x
<em>hope this helps. I am in algebra two so you can trust my answer. Happy holidays stay safe</em>
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