a-b=-5 first equation and -8a+2b=-14 second equation find the value of and b
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Step-by-step explanation:
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Answer: a=4 and b=9
Step-by-step explanation:
a - b + 5 = 0 [1]
-8a + 2b + 14 = 0 = -4a + b + 7 = 0 [Common factor] [2]
By elimination method,
[2] - [1]
-4a + b + 7 =0
+ a - b + 5 = 0
= -3a + 0 +12 = 0
= -3a = -12
a = 4
In [1], 4 - b = -5
-b = -9
b = 9
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