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Please help!

What is the value of y in the solution to the system of equations?

x + y = 1

2x – 3y = –30

–8
–3
3
8

User Firefog
by
5.7k points

2 Answers

4 votes

Answer:

the answer is 8 just took the test just right now

Explanation:

User Steve Byrnes
by
4.9k points
5 votes

Let's solve this thru elimination. Starting with x + y = 1, subtract x from both sides, obtaining y = 1 - x. This yields 2x - 3(1 - x) = - 30.

Performing the multiplication, we get 2x - 3 + 3x = -30.

Combining like terms: 5x = -27, or x = -27/5.

We already know that y = 1 - x. Thus, y = 1 - (-27/5), or y = 32/5.

The solution set is (-27/5, 32/5).

User Sivasubramanian
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5.9k points