saraalqurashi saraalqurashi

18-02-2021
Mathematics

contestada

Solve each system by elimination. 3x - 2y = 1 2x + 2 y = 14

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Karlpierre Karlpierre

18-02-2021

Add 3 and 12 , cancel -2 y+2y and and add 14 and 14
3x-2y=14
12x+2y=14
15x=28
Divide both sides by 15
X=28/15
3x 28/15 -2y=14
Y=-21/5
(X,y)=28/15, -21/5
3x 28/15 -2x(-21/5)=12x 28/15 +2x(-21/5)=14
14=14=14
(x, y)=(28/15, -21/5) is the answer

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