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masha68 [24]
3 years ago
11

The sum of a number and 7 is the same as double the number increased by 3

Mathematics
2 answers:
dimulka [17.4K]3 years ago
8 0
The statement above is the same as the mathematical expression below...

x + 7 = 2x + 3

We want to solve for x in these types of problems. To do so, we must get all of the "x"s on one side of the equal sign and the constants on the other.

7 - 3 = 2x - x
4 = x

Our answer is x = 4.
koban [17]3 years ago
4 0
So, let’s represent the number as n:
n+7=2n+3
Subtract both sides by 3:
n+4=2n
Now by n:
2n=4
Divide:
n=2
The number is 2
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patriot [66]
Whats the model because 7/9 × 3/4= 7/12 which also equals to 21/36
as 7/12 is the simplified version of 21/36 but then for c 4×9 =36 so I'm a bit confused my self but here's a bit of a start
7 0
3 years ago
Solve for x.<br> ­a = bx<br> A) (­-b)\a<br> B) b -­ a<br> C) (­-a) + b<br> D) (­-a)/b
Andreyy89
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3 0
3 years ago
The ratio of male to female students in a junior high
nalin [4]

the total no of population=1650

13:17 first add the two numbers 13+17=30

then 13/30×y =715 , i make 13 at the numerator because it's males ratio

after that 30/13×13/30y =715 ×30/13

y =715×30/13

y =1650

after u find the total no it's simple to find the no of females

17/30×1650=935

8 0
3 years ago
TIMED, need the answer ASAP, will give brainiest
ololo11 [35]
I think it's four?...
6 0
3 years ago
How do u graph x+y=-2​
sdas [7]

Answer:

The answer is

y =  - x - 2

Step-by-step explanation:

The problem is

x + y =  - 2

First we have to bring x to the other side se we subtract x from both sides

x + y =  - 2 \\  - x \:  \:  \:  =  - 2 - x

Then we have to put it in order so the answer is

y =  - x - 2

4 0
3 years ago
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