Question

Please solve where I can see. 3a+4=a+18

Answer 1

a=7
you would start with the equation 3a+4=a+18
to solve you try to get a by itself. you would first subtract an a from each side to get all the a's together- 2a+4=18
then you would subtract 4 from each side to get the 2a by itself- 2a=14
finally to get a by itself you divide each side by 2, to get a=7

Answer 2

3a+4=a+18
-4. -4. (minus 4 from both sides)
3a=a+14
-a. -a. (minus a from both sides)
2a=14
a=7