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PIT_PIT [208]
3 years ago
13

Solve using substitution -3x-4y=-2 y=2x-5

Mathematics
2 answers:
slavikrds [6]3 years ago
8 0

1)   I )-3X-4Y = -2

    Y = 2X-5, substitute it in I

-3X-4(2X-5) = -2 ⇒-3X-8X+20 = -2⇒-11X = -2-20 ⇒(-1) -11X = -22 ⇒11X= 22⇒X= 22/11 ⇒X= 2

Alik [6]3 years ago
4 0

-2/3,19/3.                                                 X=-2/3.                                                           Y=-19/3

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