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9966 [12]
3 years ago
5

Plz help me asnwer this

Mathematics
2 answers:
Daniel [21]3 years ago
8 0

Answer:

x= 0

y= -3

Step-by-step explanation:

6x-5y=15

substitution...

6(y+3)-5y=15

6y+18-5y=15

y+18=15

-18     -18

y= -3

substitution again...

6x-5(-3)=15

6x+15=15

-15      -15

6x=0

/6   /6

x= 0

nignag [31]3 years ago
5 0

Answer:

(0, -3)

x = 0

y = -3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define systems</u>

6x - 5y = 15

x = y + 3

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

<em>Substitution</em>

  1. Substitute in <em>x</em>:                               6(y + 3) - 5y = 15
  2. Distribute 6:                                   6y + 18 - 5y = 15
  3. Combine like terms:                      y + 18 = 15
  4. Isolate <em>y</em>:                                         y = -3

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Define original equation:                    x = y + 3
  2. Substitute in <em>y</em>:                                     x = -3 + 3
  3. Add:                                                      x = 0
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