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3 years ago

-7 2/3+ (-5 1/2)+ 8 3/4=

Mathematics

2 answers:

lions [1.4K]3 years ago

8 0

First rewrite the fractions to have a common denominator.

2/3 = 8/12 , 1/2 = 6/12 and 3/4 = 9/12

Now you have:

-7 8/12 + (-5 6/12) + 8 9/12

-7 8/12 + (-5 6/12) becomes -7 8/12 - 5 6/12 = -13 2/12

Now you have

-13 2/12 + 8 9/12 = -4 5/12

Answer: -4 5/12

rodikova [14]3 years ago

3 0

Step-by-step explanation:

-7(⅔) + -5(½) + 8(¾)

-23/3 + (-11/2) + 35/4

-92 - 66 + 105/12

-154 + 105/12

-49/12

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3 years ago

How many cakes can you make having 3 2/3 cups of flour,if for one cake you need 1/3 cup of flour?

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3 years ago

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2n-7/3 = 15 solve for n

WITCHER [35]

$2n- \frac{7}{3} =15$
$2n- \frac{7}{3} =15$ common denominator is 3
$3(2n- \frac{7}{3} )=3*15$ distributhing 3 through parantheses
$3*2n- \frac{3*7}{3}=3*15$
$3*2n-7=3*15$
$6n-7=45$ add7
$6n=45+7$
$6n=52$ divide by 6
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3 years ago

Drag each tile to the correct box. Arrange the equations in order from least to greatest bed on their solution. Equation A: 5( x

olya-2409 [2.1K]

Answer:

Step-by-step explanation:

Find the value of x in each equation then compare the solutions from the least to the greatest

In A

5( x-6)+3x=3/4(2x-8) ------------Open brackets

5x-30+3x=3/2x-6

5x+3x-30=3/2x-6

8x-3/2x=-6+30---------------collect like terms

16x-3x=48

13x=48-----------------dived both sides by 13

x=48/13 = 3.7

In B

2.7(5.1x+4.9)=3.2+28.9-------------open bracket

13.77x+13.23=32.1

13.77x=32.1-13.23---------------collect like terms

13.77x=18.87

x=18.87/13.77----------------------divide both sides by 13.77

x=1.37

In C

5(11x-18)=3(2x+7)--------------------open brackets

55x-90=6x+21

55x-6x=21+90-----------------------collect like terms

49x=111----------------------------------divide both sides by 49 to get x

x=111/49 = 2.27

From the solutions, the least value of x is in B, then C ,and finally A

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4 years ago

Which of the following shows the correct evaluation for the exponential expression (6/7) 2?

kari74 [83]

Answer:

B) 6/7x2 = 1 5/7

Step-by-step explanation:

6/7 (2)

= ( 6/7) (2/1)

= (6)(2)/(7)(1)

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8 0

3 years ago

Read 2 more answers