Answer:
y = -4, x = -9
Step-by-step explanation:
System: -2x + 5y = -2, x - 3y = 3
Multiply the second equation: 2x - 6y = 6
Elimination:
-2x + 5y = -2
<u>+ 2x - 6y = 6</u>
- y = 4 --> y = - 4
Plug in: x - 3(-4) = 3
x + 12 = 3
x = -9
//Add 6 to both sides:
//Multiply by -1 on both sides:
Multiply by 3 on both sides:
Divide by 4 on both sides:
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Answer: x = 15 (Answer C)-----------------------------------------
Answer:
10x^2 +2x -9
Step-by-step explanation:
Group things that are alike and simplify
(3x^2+7x^2) = 10x^2
(2x) nothing to add or subtract with it so it stays positive 2x= +2x
(-5-4) = -9
Then put the answer from highest degree to lowest