Answer:
Hmmm... interesting on my final I answered B: a=14, b=8 and got it wrong but, when I did it again I got C: a=17, b=6
Step-by-step explanation
5x + 4y = 32 ⇒ 45x + 36y = 288
9x - 1y = 33 ⇒ <u>45x - 5y = 165</u>
<u>41y</u> = <u>123</u>
41 41
y = 3
5x + 4(3) = 32
5x + 12 = 32
<u> - 12 - 12</u>
<u>5x</u> = <u>20</u>
5 5
x = 4
(x, y) = (4, 3)
Answer:
9+(-8)
Step-by-step explanation:
8-(-9) is subtraction
9+8 would not give you a difference
8+(-9) would give you a negative number
so 9+(-8) is the right answer
<span>C.-8+(8+7)=(-8+8)+7.</span>
