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VikaD [51]
3 years ago
11

Solve using substitution method. 3×-4y=18 and 2x + y = 1

Mathematics
1 answer:
Shalnov [3]3 years ago
3 0
3x - 4y = 18 ⇒ 3x -  4y = 18
2x +  y =   1 ⇒ 8x + 4y =   4
                              11x = 22
                               11     11
                                  x = 2
                          2x + y = 1
                       2(2) + y = 1
                           4 + y = 1
                         - 4        - 4
                                 y = -3
                            (x, y) = (2, 3)
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