Home Lessons Calculators Worksheets Resources Feedback Algebra Tutors

Calculator Output

Simplifying
3 + 4(z + 5) = 31

Reorder the terms:
3 + 4(5 + z) = 31
3 + (5 * 4 + z * 4) = 31
3 + (20 + 4z) = 31

Combine like terms: 3 + 20 = 23
23 + 4z = 31

Solving
23 + 4z = 31

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-23' to each side of the equation.
23 + -23 + 4z = 31 + -23

Combine like terms: 23 + -23 = 0
0 + 4z = 31 + -23
4z = 31 + -23

Combine like terms: 31 + -23 = 8
4z = 8

Divide each side by '4'.
z = 2

Simplifying
z = 2
Processing time: 0 ms. 52788271 equations since February 08, 2004.   Disclaimer

Equation Calculator & Solver

Equation: Variable:
       
Hint: Selecting "AUTO" in the variable box will make the calculator automatically solve for the first variable it sees.

Home Lessons Calculators Worksheets Resources Feedback Algebra Tutors