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3 years ago

What is 4/5-1/3?I read online that it is 7/15 but how is it?

Mathematics

2 answers:

Ghella [55]3 years ago

7 0

Multiply the common denominators
4/5(3/3)-1/3
4/5(3/3)-1/3(5/5)
4*3/15 - 1*5/15
4*3 - (1*5)/15

7/15

user100 [1]3 years ago

5 0

Hey there!

You have to find a common denominator. That is 15. So multiply 4/5 by 3 on the bottom and top to get 12/15. Multiply 1/3 by 5 to get 5/15. The equation is now 12/15-5/15. 12-5=7. You don’t change the denominator though, so the answer would be 7/15.

I hope this helps!

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Lana71 [14]

Answer:

Tn = 64-4n

Step-by-step explanation:

The nth term of an AP is expressed as:

Tn = a+(n-1)d

a is the common difference

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d is the common difference

Given the 6th term a6 = 40

T6 = a+(6-1)d

T6 = a+5d

40 = a+5d ... (1)

Given the 20th term a20 = -16

T20 = a+(20-1)d

T20 = a+19d

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Solving both equation simultaneously

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Subtracting both equation

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Substituting d = -4 into equation

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3 years ago

What is<br> -1 5/6 - (-3 1/4) ?

lions [1.4K]

Answer:

$1\frac{5}{12}$

Step-by-step explanation:

Eliminating a negative and changing our operation

$1\frac{5}{6} +3\frac{1}{4}$

Rewriting our equation with parts separated

$-1-\frac{5}{6} +3+\frac{1}{4}$

Solving the whole number parts

$-1+3=2$

Solving the fraction parts

$-\frac{5}{6} +\frac{1}{4} =[?]$

Find the LCD of 5/6 and 1/4 and rewrite to solve with the equivalent fractions.

LCD = 12

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Combining the whole and fraction parts

$2-\frac{7}{12} =1\frac{5}{12}$

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