Question

a+b+c=176
b=28+c
a=b-c

Answer 1

a + b + c = 176

b = 28 + c

a = b - c ⇒ a = c + 28 - c

( c + 28 - c ) + ( 28 + c ) + c = 176

⇒ 2c + 28 + 28 = 176

2c + 56 = 176

2c = 176 - 56

2c = 120

c = 120 ÷ 2

c = 60

b = 28 + 60

b = 88

a = 88 - 60

a = 28