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mart [117]
3 years ago
15

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

Mathematics
2 answers:
Elena L [17]3 years ago
5 0
3y = -2x - 19 ⇒   2x +  3y = -19
-5x - 3y = -2  ⇒ <u>-5x -   3y = -2</u>
                                   <u>-3x</u> = <u>-17</u>
                                    -3      -3
                                      x = 5²/₃
                           -5x - 3y = -2
                     -5(5²/₃) - 3y = -2
                       -28¹/₃ - 3y = -2
                     <u>+ 28¹/₃          + 28¹/₃
</u>                                  <u /><u>-3y</u> = <u>26¹/₃
</u>                                   -3      -3
                                     y = -8⁷/₉
                               (x, y) = (5²/₃, -8⁷/₉)
<u />
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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An example of an item where you would need to find the area of a rectangle is a phone that has a rectangular shape.

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