Step-by-step explanation:
Taking value of x= 4
16. 4 + 8 = <u>12</u>
17. 24 ÷ 4 = <u>6</u>
18. 3(4+4) = 3 × 8 = <u>24</u>
19. 5 × 4 = <u>20</u>
20. 30 - (5 × 4) = 30 - 20 = <u>10</u>
21.( 2 × 4 )+ 5 = 8 + 5 = <u>13</u>
22. 4 + 1 = <u>5</u>
23. 25 × 4 = <u>100</u>
24. 60 × 4 = <u>240</u>
25. (25×4) + 10 = 100 + 10 = <u>110</u>
Alright. One way you can do this is to list multiples of each denominator:
1/4:
4, 8, 12, 16, 20, 24, 28, 32, 36...... and so on
3/7:
7, 14, 21, 28, 35, 42, 49, 57, 63......
1/11;
11, 22, 33, 44, 55, 66, 77, 88......
Keep going until you see the least common denominator!
Now an easier way to do this is by multiplying all of the numbers in the denominator then get the factors:
4*7*11 = 308
And since those are not divisible by a whole number (besides 4 but 308 won't be divisible by 2*7*11)
Therefore 308 is the least common denominator.
It’s d, 1 - t
t + 3 - 2 - 2t
we can rearrange it as
t - 2t + 3 - 2
-t + 1 is the same as 1 - t
Step-by-step explanation:
Word Problems are mathematical problems presented in complete languages, rather than in mathematical notations.
Example:
A certain number is divided by half, the result is added to itself to give 6, what is the number?
Solution:
- Let the number be x
- Divide x by half:
In word problem, extra caution is to be taken, as misinterpretation can be very chaotic. Dividing a number by 2, is totally different from dividing the number by half.
4 divided by 2 is 4÷2 = 2
4 divided by half is 4÷½ = 4×2/1 = 8
2 and 8 are different, reason to be cautious.
So dividing x by half, we have:
x ÷ 1/2 = x × 2/1 = 2x.
- Now, what we have is
2x + x = 6
Solving this equation, we can obtain the value of x.
2x + x = 6
3x = 6
Dividing both sides by 3
3x/3 = 6/3
x = 2.
Therefore, the solution to the word problem is x = 2.
