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musickatia [10]
3 years ago
9

5d + 4 + 2 + - 9 + 3d + 4c

Mathematics
2 answers:
Bond [772]3 years ago
8 0

Answer:

8d + 4c - 1

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<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

5d + 4 + 2 + -9 + 3d + 4c

<u>Step 2: Simplify</u>

  1. Combine like terms (d):                                                                                    8d + 4 + 2 - 9 + 4c
  2. Combine like terms:                                                                                         8d + 4c - 1
Anuta_ua [19.1K]3 years ago
5 0

Answer:

8d + 4c - 3

Step-by-step explanation:

5d + 4 + 2 + - 9 + 3d + 4c

5d + 3d + 4c + 4 +2 - 9

8d + 4c - 3

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Now, if you don't know this you may be confuse so after rref([A]) was enter a matrix came up with [1 0 0 -21] in the top row this means x equal -21. So, the next row is y and it came out as [0 1 0 46] so y equals 46 and I'm going to let you figure out what z is by looking at the matrix.

SO... X=-21 Y=46 and Z=-10

Let's Test it

4x + 5y - 5z = 196 \\ 4( - 21) + 5(46) - 5( - 10) = 196 \\  - 84 + 230 + 50 = 196 \\ 196 = 196



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