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Brilliant_brown [7]
4 years ago
7

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

Mathematics
1 answer:
QveST [7]4 years ago
4 0
3x - 5y = 11 ⇒ 3x - 5y = 11
1x - 3y = 1   ⇒ <u>3x - 9y = 3  </u>
                                <u>4y</u> = <u>8</u>
                                 4     4
                                  y = 2
                       3x - 5(2) = 11
                         3x - 10 = 11
                         <u>     +10  +10</u>
                                <u>3x</u> = <u>21</u>
                                 3      3
                                  x = 7
                            (x, y) = (7, 2)
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