Answer:
b = 4 + 2c / a
Explanation:
ab - 2c = 4
ab - 2c + 2c = 4 + 2c ..( add 2 both side)
ab = 4 + 2c
ab / a = 4 + 2 c / a ...( Divide each side by a)
b = (4+2c)/a
Add 2c to each side
ab - 2c+2c = 4+2c
ab = 4+2c
Divide each side by a
ab/a = (4+2c)/a
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