3 years ago

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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