B. 2x + 3y = 12 and 2x - y = 4.
5=15
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Step-by-step explanation:
2x + 3y = 12
2x - y = 4.
- + -
4y =8
y=2
2x - y = 4.
2x - 2 = 4.
2x = 4 + 2
2x = 6
x=3
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