a + b + c = 162 kg
a- x = 43 => a= x+43
b - x = 45 => b = x+45
c - x = 47 => c = x+ 47
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? kilograme
a + b + c = 162
x + 43 + x + 45 + x + 47 = 162
x•3 + 88 + 47 = 162
x•3 + 135 = 162
x•3 = 162- 135
x•3 = 27
x= 27 : 3
x = 3
a = 3 + 43
a= 46
.b = 3+45
b=. 48
c = 3 + 47
c= 50. R : a= 46, b= 48 c=50