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linear equation

4.5 + 1.5y=24
x-y=4

Sagot :

Panoyinidn
4.5x + 1.5y = 24 ⇒ 4.5x + 1.5y = 24
1.0x -  1.0y = 4   ⇒ 4.5x - 4.5y = 18
                                             6y = 6
                                              6     6
                                               y = 1
                             4.5x + 1.5(1) = 24
                                 4.5x + 1.5 = 24
                                          - 1.5    - 1.5
                                          4.5x = 22.5
                                           4.5      4.5
                                               x = 5
                                          (x, y) = (5, 1)
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