Answer :
Answer:
The number Grace took was 4.
Step-by-step explanation:
Let us assume that she took a number 'x'
Now she added 7 in it, [tex]x+7[/tex]
Then multiplied by 3 , [tex]3(x+7)[/tex] = [tex]3x+21[/tex]
Then took away or subtracted 5.
[tex]3x+21-5=3x+16[/tex]
And divided by 4 to get answer 7.
[tex]\frac{3x+16}{4}=7[/tex]
Now we will solve this to get x.
[tex]3x+16=28[/tex]
[tex]=> 3x=28-16[/tex]
[tex]=> 3x=12[/tex]
x = 4
Hence, the number Grace took was 4.
The number Grace thought of is 4.
Let x represent the number Grace thought of.
Adding 7 to the number yields : x + 7
The sum of the number multiplied by 3: 3(x +7)
The result is subtracted by 5 : 3(x +7) - 5
This is now divided by 4 to give and answer of 7. This can be represented with: [ 3(x +7) - 5 ] / 4 = 7
In order to determine the value of x, the following steps would be taken:
Multiply both sides of the equation by 4
3(x +7) - 5 = 28
Expand the bracket:
3x + 21 - 5 = 28
Add similar terms
3x + 16 = 28
Combine similar terms
3x = 28 - 16
3x = 12
Divide both sides of the equation by 3
x = 4
A similar question was answered here: https://brainly.com/question/11401227?referrer=searchResults