l d+d+45=85
Enter Equation or Inequality

Solve the following equation

d+d+45=85

Solve for d

d + d + 45 = 85

Group the d terms on the left:

(1 + 1)d = 2d

Form modified equation

2d + 45 = + 85

Group constants

Group our constants 45 and 85.
subtract 45 from both sides

2d + 45 - 45 = 85 - 45

Cancel 45 on the left side:

2d = 40

Divide each side of the equation by 2

2d
2
=
  
40
2

d = 20

Final Answer


d = 20