jika A+B=240 dan A/B = 1/4 maka hasil A-B adalah ...

a/b = 1/4
4a = b

a + b = 240
a + 4a = 240
5a = 240
a = 48

a + b = 240
48 + b = 240
b = 192

a - b = 48 - 192 = - 144

A + B =240
A = 240 - B

SUBTITUSI Nilai A :

[tex] \frac{A}{B} = \frac{1}{4} \\ \frac{240 -B}{B} = \frac{1}{4} \\ 960 - 4B = B \\ 960 = 5B \\ \frac{960}{5} =B \\ 192 = B[/tex]
Maka nilai A adalah

A = 240 - 192
A = 48


Maka :
= A - B
= 48 - 192
= -144