l 3a+3=90
Enter Equation or Inequality

Solve the following equation

3a+3=90

Solve for a

3a + 3 = 90

Divide each side by 3

3a
3
=
  
3
3

Group constants

Group our constants 3 and 90.
subtract 3 from both sides

3a + 3 - 3 = 90 - 3

Cancel 3 on the left side:

3a = 87

Divide each side of the equation by 3

3a
3
=
  
87
3

a = 29

Final Answer


a = 29