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valentina_108 [34]
3 years ago
11

How to solve a simultaneous equation

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0
Http://mathsfirst.massey.ac.nz/Algebra/SystemsofLinEq/EMeth.htm this website explains it well 
You might be interested in
Which expression has the same value as 37.4 - 54.9?
GrogVix [38]

Answer:

D

Step-by-step explanation:

In the original expression =  37.4 - 54.9 = -17.5

So, we have to solve all the equations but 1 of them has to equal to -17.5

A) -54.9 + (-37.4) = -92.3

   Remove parentheses

   = -54.9 - 37.4

Subtract the numbers

    -92.3

B) 54.9 - 37.4 = 17.5

Since 54.9 is greater than 37.4 just subtract normally

 4   14

  5  4.   9                < ------- Line up the decimal points like this

-  3  7.   4                <---------  Subtract the decimals

-----------------

   1   7   .    5       <---------- This is the final answer to B.                    

 

C)  37.4 - (- 54.9) = 92.3

   Change the sign to addition

        =37.4 + 54.9

  Add the numbers normally

  54.9

+ 37. 4

--------------

  92.3

D)  37.4 + (-54.9) = -17.5

   Change the sign to subtraction

      =    37.4 - 54.9

Subtract them normally (but as you can see you are subtracting a smaller number from a larger number so heres a trick that you can use switch the equation by putting the larger number in first like this....)

54.9 - 37.4 = 17.5 (REMEMBER the answer is not 17.5 because the original equation of D is reversed  37.4 - 54.9 so in this case your answer should be

- 17.5)

37.4 - 54.9 = -17.5

Your final answer is D because it matches 37.4 - 54.9.

Hope this helps!

3 0
3 years ago
Read 2 more answers
Jim charges $150 plus $60 per hour to move furniture. The equation below represents the
Sladkaya [172]

Answer:

the equation is corrent  if that what your asking

Step-by-step explanation:

8 0
3 years ago
What is the solution for x in the equation? <br>-x + 3/7 = 2x -25/7<br>​
Harlamova29_29 [7]

Answer:

x = 4 /3

Decimal Form:

x =  1. 33333 (repeating)

Mixed Number Form:

x =  1  1 /3

Step-by-step explanation:

4 0
3 years ago
Can a triangle have side lengths 4, 4, 7? <br> 1.no <br> 2. Yes <br> 3. not enough information
Marina CMI [18]
Yes! The lengths of each side must be less than the sum of the other two lengths. It looks like this:
4+4>7
7+4>4
4+7>4
8 0
3 years ago
What is the answer to 8/15 + 2/5
mrs_skeptik [129]

Answer:

Step-by-step explanation:

8/15 + 2/5 = 8/15 + 6/15 + 14/15

3 0
3 years ago
Read 2 more answers
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