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jeka94
3 years ago
10

Linear System, substitutional method 5x+4y=32 9x-y=33 helppp

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
6 0
5x + 4y = 32 ⇒ 45x + 36y = 288
9x -  1y = 33 ⇒ <u>45x -    5y = 165</u>
                                    <u>41y</u> = <u>123</u>
                                     41      41
                                        y = 3
                            5x + 4(3) = 32
                              5x + 12 = 32
                               <u>    - 12  - 12</u>
                                      <u>5x</u> = <u>20</u>
                                       5      5
                                        x = 4
                                  (x, y) = (4, 3)
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