solve the equation by cross multiplication method
5a+2b = 8
9a+5b= 27
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Answer:
5a + 2b = 8
a = 8-2b upon 5
9a + 5b = 27
a = 27 -5b upon 9
27 - 5b upon 9 = 8 - 2b upon 5 as a=a
9(8-2b) = 5 ( 27 - 5b)
72 - 18 b = 135 - 25 b
135-72=25b-18b
63 = 7b
therefore b = 9
5a + 18 =8
a= -10 upon 5
therefore a = -2
hence a= -2 and b= 9
Step-by-step explanation:
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