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3 years ago

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

Mathematics

2 answers:

Pepsi [2]3 years ago

6 0

Answer:

z = -9

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Terms/Coefficients/Degrees

Step-by-step explanation:

Step 1: Define

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

Step 2: Solve for z

Distribute negative: -21 = z + 6 + 2z
Combine like terms: -21 = 3z + 6
Isolate z term: -27 = 3z
Isolate z: -9 = z
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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