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Flura [38]
3 years ago
8

Solve for z: -21 = z - (-6 - 2z)

Mathematics
2 answers:
Pepsi [2]3 years ago
6 0

Answer:

z = -9

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Terms/Coefficients/Degrees

Step-by-step explanation:

<u>Step 1: Define</u>

-21 = z - (-6 - 2z)

<u>Step 2: Solve for </u><u><em>z</em></u>

  1. Distribute negative:                      -21 = z + 6 + 2z
  2. Combine like terms:                     -21 = 3z + 6
  3. Isolate <em>z</em> term:                               -27 = 3z
  4. Isolate <em>z</em>:                                        -9 = z
  5. Rewrite:                                         z = -9
Naddika [18.5K]3 years ago
6 0

Answer:

Step-by-step explanation

-21-6=2z+z

Or,-27=3z

Or,z=-9

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: sign means ratio
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