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Ugo [173]
3 years ago
7

Solve this simultaneous equation 5x+2y=11 4x-3y=18

Mathematics
1 answer:
MakcuM [25]3 years ago
6 0
5x + 2y = 11 ⇒ 15x + 6y = 33
4x -  3y = 18 ⇒   8x -  6y = 36
                                 23x = 69
                                  23     23
                                     x = 3
                           5x + 2y = 11
                        5(3) + 2y = 11
                          15 + 2y = 11
                        - 15          - 15
                                  2y = -4
                                   2      2
                                     y = -2
                               (x, y) = (3, -2)
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