Malikweaver817 Malikweaver817

15-11-2017
Mathematics

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a first number plus twice a second number is 14 twice the first number plus the second totals 31

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rco5918ozh2mj rco5918ozh2mj

15-11-2017

X + 2Y = 14
X + Y = 31

Subtract

X + 2Y = 14
- X + Y = 31
---------------------
Y = -17

Plug Y into the simplest equation

X + Y = 31
X + (-17) = 31
X - 17 = 31 (Add 17)
X = 48

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