4−6n=60−2n
what is n?

n = -14

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

4 - 6n = 60 - 2n

Step 2: Solve for n

Add 6n to both sides:                              4 = 60 + 4nSubtract 60 on both sides:                      -56 = 4nDivide both sides by 4:                            -14 = nRewrite:                                                     n = -14

Step 3: Check

Plug in n into the original equation to verify it is a solution.

Substitute in n:                    4 - 6(-14) = 60 - 2(-14)Multiply:                               4 + 84 = 60 + 28Add:                                     88 = 88

Here we see that 88 does indeed equal 88.

∴ n = -14 is a solution of the equation.

21/2 hours=150 minutes150 minutes x 80 beats per minute= 12,000 beats in 2 1/2 hours