Greetings!
"Solve for: [tex]19.50 = 7m+2[/tex]"...
Add -2 to both sides.
[tex](19.50)+(-2) = (7m+2)+(-2)[/tex]
Simplify.
[tex]17.5=7m[/tex]
Divide both sides by 7.
[tex](17.5)/7=(7m)/7[/tex]
Simplify.
[tex]2.5=m[/tex]
[tex]m=2.5[/tex]
The variable is equal to 2.5.
Hope this helps.
-Benjamin