Find a+b,if 3a+2b=13and4a-2b=8
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Answer: a + b = 3 + 2 = 5
Step-by-step explanation: Let 3a + 2b = 13 be equ. (i)
and 4a - 2b = 8 be equ. (ii)
Then, by elimination method 3a + 2b = 13
4a - 2b = 8
7a = 21
=> a = 3
Then, putting the value a = 3 in equ. (ii) we get
4 × 3 - 2b = 8
⇒ 12 - 2b = 8
⇒ -2b = - 4
⇒ b = 2
Therefore, a + b = 3 + 2 = 5
HOPE U UNDERSTAND ...
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