System of equations 12x-5y=-20 y=x+4

Mathematics

1 answer:

Fiesta28 [93]3 years ago

5 0

12x-5(x+4)=-20
12x-5x-20=-20
12x-5x=-20+20
7x=0
X=0
Y=0+4=4

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Please help me in this question

weqwewe [10]

Question is: how many 84s will fit in 5376? Let's think about some easy multiples:

84 * 100 = 8400, so it's too big
84 * 10 = 840, so it might work

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It's correct, I checked it with calculator. I just hope you'll be able to read something from that, it's quite difficult to do partial dividing with no pencil and paper :)

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