Question 310964
A-first number
B-second number
C-third number
.
.
.
"the second is two less than the first"
{{{B=A-2}}}
"the third number is 4 less than the first"
{{{C=A-4}}}
"all 3 numbers sum to 45"
{{{A+B+C=45}}}
{{{A+(A-2)+(A-4)=45}}}
{{{3A-6=45}}}
{{{3A=51}}}
{{{highlight( A=17 )}}}
.
.
{{{B=A-2)}}}
{{{highlight( B=15)}}}
.
.
{{{C=A-4}}}
{{{highlight( C=11)}}}