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Answer:
7
Step-by-step explanation:
21 divided by 3 = 7
7 x 3 = 21
The slope for the equation is 1/4
(-9x-6y=-54) +(8x+6y=50)= -x=-4; x=4
3(4)+2y=18
12+2y=18
2y=6 ; y=3
Each birthday card costs 4
Answer:
19
Step-by-step explanation:
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