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Using substitution 3x-5y=11 and x-3y=1

Sagot :

Panoyin
3x - 5y = 11 ⇒ 3x - 5y = 11
1x - 3y = 1   ⇒ 3x - 9y = 3 
                                4y = 8
                                 4     4
                                  y = 2
                       3x - 5(2) = 11
                         3x - 10 = 11
                              +10  +10
                                3x = 21
                                 3      3
                                  x = 7
                            (x, y) = (7, 2)
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