2 years ago

What is 7x + 15 = 9x + 15 - 2x + 1 and how many solutions are there

Mathematics

2 answers:

RSB [31]2 years ago

5 0

Step-by-step explanation:

7x + 15 = 9x + 15 - 2x + 1

7x + 15 = 7x + 16

Bringing like terms on one side

7x - 7x = 16 - 15

x = 1

7x + 15 = 9x + 15 - 2x + 1

7x + 15 = 7x + 16

Bringing like terms on one side

15 - 16 = 7x - 7x

-1 = x

There are two solutions

Olin [163]2 years ago

5 0

Answer:

no solutions

Step-by-step explanation:

7x + 15 = 9x + 15 - 2x + 1

Combine like terms

7x+15 = 7x+16

Subtract 7x from each side

7x+15-7x = 7x+16-7x

15 =16

This is not a true statement so there are no solutions

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