If 5a - 2b = 25 , 3a - 2b = 15 find a and b
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Answered by
2
The obvious approach would be to find individual values of a and b and then find a - b.
If we look a little closer, subtracting of the 2 equations is sufficient
5a + 2b - (4a + 3b) = 11 - 4
5a + 2b - 4a - 3b = 7
5a - 4a + 2b - 3b = 7
a - b = 7
Answered by
1
Answer:
a=5,b=0
hope this helps u
Step-by-step explanation:
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