3 years ago

Fine the difference (2ab-5a-7)-(-5ab-7)

Mathematics

1 answer:

serg [7]3 years ago

5 0

Answer:

7ab - 5a

Step-by-step explanation:

For addition and subtraction this type of variable we should always keep one thing in mind that, we can only add or subtract only those digits whose variables are the same.

Solving given equation step to step:

(2ab - 5a - 7) - (-5ab - 7)

Opening the bracket first,

⇒ 2ab - 5a - 7 - (- 5ab) - (- 7)

⇒ 2ab - 5a - 7 + 5ab + 7

Now, taking same variables digits together

⇒ (2 + 5)ab - 5a - 7 + 7

⇒ 7ab - 5a - 0

⇒ 7ab - 5a

You might be interested in

A book sold 31,500 copies in its first month of release. Suppose this represents 8.9% of the number of copies sold to date. How

kogti [31]

Answer:

35,393,258

Step-by-step explanation

$\frac{31,500}{x} =\frac{0.089}{100}$

$0.089x=3,150,000$

$x= 35,393,258.427$

Rounded to the nearest whole number, that is 35,393,258.

7 0

2 years ago

Simple interest $1200 8% 2years

Gennadij [26K]

This is a screen shot of an online calculator called mathportal.com it shows the work used to find the answer to this question

Hope this helped and have an amazing day :)

-yO mAmA

5 0

3 years ago

I don't understand this pls help

Nitella [24]

Answer:

Step-by-step explanation:

Solve. Remember to follow PEMDAS.

PEMDAS is the order of operation, and =

Parenthesis

Exponent (& Roots)

Multiplication

Division

Addition

Subtraction

First, divide 54 with -6:

54/(-6) = -9

Next, combine the terms.

10 + (-9) = 10 - 9 = 1

1 is your answer.

6 0

3 years ago

The student council hires a dj to play music at the school dance. They pay DJ Dan for 3.5 h at his hourly rate plus a 125$ setup

fiasKO [112]

3.5h + 125 = 405
3.5h = 280
hourly rate = 80 dollars

6 0

3 years ago

Read 2 more answers

15/7 times 4/5 times 7/2 I can't figure this out

Paul [167]

15/7*7/2*4/5=15/2*4/5=60/10=6

6 0

3 years ago