I’m pretty sure that it is b
Step-by-step explanation
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The answer is D: 66
By using PEDMAS
Answer: Multiply each equation by the value that makes the coefficients of opposite.
(−2) ⋅ (3x−15y) = (−2) (9) (-2) ⋅ (3x-15y) = (-2) (9) (3) ⋅ (2x−10y) = (3) (6)
Simplify.
–6x+30y= − 18
6x − 30y = 18
i hope this answers it