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3 years ago

How many solutions does the equation 3x+15=2x+10+x+5 have

Mathematics

1 answer:

Tcecarenko [31]3 years ago

7 0

Answer:12

Step-by-step explanation:

Simplifying

3x + 15 = 2x + 10 + x + 5

Reorder the terms:

15 + 3x = 2x + 10 + x + 5

Reorder the terms:

15 + 3x = 10 + 5 + 2x + x

Combine like terms: 10 + 5 = 15

15 + 3x = 15 + 2x + x

Combine like terms: 2x + x = 3x

15 + 3x = 15 + 3x

Add '-15' to each side of the equation.

15 + -15 + 3x = 15 + -15 + 3x

Combine like terms: 15 + -15 = 0

0 + 3x = 15 + -15 + 3x

3x = 15 + -15 + 3x

Combine like terms: 15 + -15 = 0

3x = 0 + 3x

3x = 3x

Add '-3x' to each side of the equation.

3x + -3x = 3x + -3x

Combine like terms: 3x + -3x = 0

0 = 3x + -3x

Combine like terms: 3x + -3x = 0

0 = 0

Solving

0 = 0

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