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3 years ago

3y=-2x-19 -5x-3y=-2

2 answers:

5 0

3y = -2x - 19 ⇒ 2x + 3y = -19
-5x - 3y = -2 ⇒ -5x - 3y = -2
 -3x = -17
 -3 -3
 x = 5²/₃
 -5x - 3y = -2
 -5(5²/₃) - 3y = -2
 -28¹/₃ - 3y = -2
 + 28¹/₃ + 28¹/₃
 -3y = 26¹/₃
 -3 -3
 y = -8⁷/₉
 (x, y) = (5²/₃, -8⁷/₉)

nevsk [136]3 years ago

4 0

3y=-2x-19 -5x-3y=-2-5x - (-2x - 19) = -2
-5x + 2x + 19 = -2
-3x = -21
x = 7

3y = -2(7) - 19
3y = -14 - 19
3y = 33
y = 11

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Read 2 more answers