sherazhussain43 sherazhussain43

24-02-2021
Mathematics

contestada

Solve to find the values of a and b.
4a + 7b = 38
9a + 7b = 68

Respuesta :

rayanneloh06 rayanneloh06

24-02-2021

4a + 7b = 38 -> (1)
9a + 7b = 68 -> (2)

Subtract (1) from (2),
9a - 4a + 7b - 7b = 68 - 38
5a = 30
a = 6

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