Question 173634
let ages of sue frank,ann,and john: be s,f,a,and j respectively
:
f=3s........eq 1
f=j+15......eq 2----->j=f-15
s=j-1.......eq 3
:
take f's value from eq 1 and plug it into eq 2
:
j=(3s)-15
:
now take j's value and plug it into eq 3
:
s=(3s-15)-1
:
2s=16
:
{{{s=8}}}
:
{{{highlight(f=3s=3(8)=24)}}}franks age