Question

if a-b/a+b=3/4,a=

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Answer 1

Answer:

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Step-by-step explanation:

$\frac{a - b}{a + b} = \frac{3}{4} \\ \\ 4(a - b) = 3(a + b) \\ \\ 4a - 4b = 3a + 3b \\ \\ 4a - 3a = 3b + 4b \\ \\ a = 7b$

Answer 2

Step-by-step explanation:

Given

a - b = 3 ---------------- (I)

a + b = 4 -------------------(ii)

Add both the equation

we will get 2a = 7

so a = 7/2

Hence the answer is 7/2

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