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3 years ago

1) Simplify the following:

Mathematics

1 answer:

aivan3 [116]3 years ago

8 0

Step-by-step explanation:

ok so for number 1 you first have to group the like terms therefore you will now have:

9r-4r+8-6

and now you calculate:

9r-4r=5r

8-6=2

so that means 5r-2 is simplied version for no.1

for number you 2 you first multiply why is inside the brackets by what is in the outside:

2(x+3y)

2x+6y (simplified version)

hope this helps! no problem

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1/6 Book

GalinKa [24]

Given:

$\frac{1}{6} \text{ book in } \frac{2}{3} \text{ hours}$

To find:

Number of books per hour

Solution:

We have to calculate the book read in one hour.

$\frac{1}{6}\text{ book }\rightarrow\frac{2}{3}\text{ hour}\\\\\text{we have to multiply both the side with 2/3}\\\\\frac{1}{6}\times\frac{3}{2}\text{ book }\rightarrow\frac{2}{3}\times\frac{3}{2}\text{ hour}\Rightarrow\frac{1}{4}\text{ book }\rightarrow1\text{ hour}$

Therefore, we can conclude that the answer is $\bold{\frac{1}{4}\text{ book }\rightarrow1\text{ hour }}$ which is option B.

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3 years ago

Confusing I tried 4x-7+31=4x+2 But it won’t work Can someone explain??

Len [333]

Answer:

0=-22

4x−7+31=4x+2

Step 1: Simplify both sides of the equation.

4x−7+31=4x+2

4x+−7+31=4x+2

(4x)+(−7+31)=4x+2(Combine Like Terms)

4x+24=4x+2

Step 2: Subtract 4x from both sides.

4x+24−4x=4x+2−4x

24=2

Step 3: Subtract 24 from both sides.

24−24=2−24

0=−22.

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Step-by-step explanation:

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