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09-08-2021
Mathematics

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Solve the System of Equations by Substitution. Show ALL work

x+y=18
y=2x-3

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teags88 teags88

09-08-2021

x + y = 18 ——— (1)
y = 2x - 3 ——— (2)

sub (2) into (1)

x + (2x - 3) = 18
3x - 3 = 18
3x = 21
x = 7

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