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worty [1.4K]
3 years ago
12

Solve the equation 9x = 7(x + 2). A) -7 B) -1 C) 1 D) 7

Mathematics
2 answers:
HACTEHA [7]3 years ago
7 0

Answer:

The solution of the equation 9x=7(x+2) is:

Option D) 7

Step-by-step explanation:

9x=7(x+2)

Eliminating the parentheses applying distributive property:

9x=7(x)+7(2)

Multiplying:

9x=7x+14

Grouping the x's on the left side of the equation: Subtracting 7x both sides of the equation:

9x-7x=7x+14-7x

Subtracting:

2x=14

Solving for x: Dividing both sides of the equation by 2:

2x/2=14/2

Dividing:

x=7

Solution: x=7 (option D)  

defon3 years ago
5 0

Answer:

the answer is letter( D 7) try it and it was correct.

Step-by-step explanation:

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