Question

a+b=100
a=3×b
----------------
a=?
b=?​

Answer 1

Salut!

$a+b=100\\a=3*b\\\\3 * b + b = 100\\4b = 100\\b = 100 : 4\\b = 25\\a = 3 * b => a = 3 * 25\\a = 75$

Sper ca ti-am fost de folos!