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2 years ago

Subtract 7x- (9+5x).

Mathematics

2 answers:

AnnyKZ [126]2 years ago

7 0

Answer:

2x - 9

Step-by-step explanation:

7x - (9 + 5x) < distribute the - into the parentheses to get rid of them

7x - 9 - 5x < combine like terms

7x - 5x = 2x

-9 stays as it is as there are no other terms to combine it with

the answer is 2x - 9

stiv31 [10]2 years ago

4 0

7x-(9+5x)

pretend that there is 1 in front of the bracket.

7x-1(9+5x)

7x-9-5x

= 2x-9

Answer: 2x-9

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ANEK [815]

Answer:

Given that,

R = 3x + 9y

Also, given that,

y = 6

R = 7

We have to find the value of x

For that, you can to put 6 and 7 to the equation instead of y and R respectively.

R = 3x + 9y

7 = 3x + 9 × 6

7 = 3x + 54

7 - 54 = 3x

- 47 = 3x

$\frac{-47}{3} = \frac{3x}{3}$

$\frac{-47}{3}=x$

Hope this helps you :-)

Let me know if you have any other questions :-)

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Answer:

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Step-by-step explanation:

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