First you need to make both denominators the same number.
The number we can use is 21.
6/7 : to make the denominator 21, you need to multiply the numerator and the denominator by 3.
6 × 3 = 18
7 × 3 = 21
The equivalent is 18/21
1/3 : to make the denominator 21, you need to multiply the numerator and the denominator by 7.
1 × 7 = 7
3 × 7 = 21
The equivalent is 7/21
18/21 + 7/21 = 25/21 = 1 4/21
You have know what number can be multiplied by itself to get 144. You can use a calculator or just multiply numbers till you get it. Don’t divide by two. But the answer is 12 because 12x12=144
Would surely like to see you begin the problem solution yourself and to share what you have done.
Let the girl's age be J and the father's F.
J=5 and F=42 now.
In x years, the father will be twice as old as the girl.
We write that as F + x = 2( J + x), or 42 + x = 2( 5 + x)
Then 42 + x = 10 + 2x => x = 32
check: is 42+32 = 2(5+32)? Is 74 = 2(37)? YES.
The answer: "5 years from now."
9514 1404 393
Answer:
B. 4 +7x -2
Step-by-step explanation:
The simplified values of the expressions are ...
The second expression listed is not equivalent to the others.