2 answers:
Answer:
D
Step-by-step explanation:
Given the 2 equations
- 8x + 8y = 8
3x - 8y = - 18
Adding the 2 equations term by term gives
(- 8x + 3x) + (8y - 8y) = (8 - 18), that is
- 5x + 0 = - 10, that is
- 5x = - 10 → D
Answer:
-5x = -10
Step-by-step explanation:
Take the x terms, y terms and constants separately.
x: -8x + 3x = 3x - 8x = -5x
y: 8y + (-8y) = 8y - 8y = 0
Constant: 8 + (-18) = 8 - 18 = -10
Take all sums together
-5x + 0 = -10
-5x = -10
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