3a + 2b = 5 , 2a - b = 3
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if u want to find its square that be 25and9
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Answer:
a = 11/7
b = 1/7
Step-by-step explanation:
3a + 2b = 5....(i)
2a - b = 3....(ii)
=> 2a = 3 + b
=> 2a - 3 = b
=> b = 2a - 3
Now put the value of b in equation (i).
=
3a + 2b = 5
=> 3a + 2(2a - 3) = 5
=> 3a + 4a - 6 = 5
=> 7a = 5+6
=> 7a = 11
=> a = 11/7
Now put the value of a in equation (i).
2a - b = 3
=> 2(11/7) - b = 3
=> 22/7 - b = 3
=> 22/7 = 3 + b
=> 22/7 - 3 = b
=> 22-(3×7)/7 = b
=> 22-21/7 = b
=> 1/7 = b
Hence a = 11/7 and b = 1/7
hope it helps.
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