Question

if a + 2b = 55 and a-2b= -13, find the value b​

Answer 1

Answer:

b = boy , bat , ball , etc

Step-by-step explanation:

$25$

Answer 2

Answer:

b = 17

Step-by-step explanation:

a +2b = 55 -------(1)

a - 2b = -13 -------(2)

eq^n(1) - eq^(2)

2a = 42

a = 42/2

a = 21

put a =21 in eq^n ,(1)

a +2b =55

21 +2b =55

2b = 55-21

2b = 34

b = 34/2

b = 17