2 answers:
Answer:
B
Step-by-step explanation:
(Standard form is automatically in integers)
Multiply by 3 to take out the fraction
3y=2x+21
-2x -2x
-2x+3y=21
Standard form means Ax+By=C with positive A (usually--some people allow A to be negative).
Multiply by (-1)
2x-3y=-21
(Technically, that's the more correct answer, but since you don't have that choices, it's just the previous one.)
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11)


they are equal so both are one
then k = -1
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Answer:321\5=64.2
Step-by-step explanation:
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Answer:
a/ac + 2b
Step-by-step explanation:
2a - b = ac + 3b
2a = ac +4b
2a/ac+4b = a/ac + 2b
Answer:
8
Step-by-step explanation: