If 5x - 6 equals 10, what is the value of 10x -12?

20

Step-by-step explanation:

First solve the first equation:

5x-6=10

+6 +6

5x/5=16/5

x=3.2

Then apply the value of x to the current equation:

10 *3.2-12

=20

20

Step-by-step explanation:

5x-6=10

-6+6   10+6

   5x=16

  5/5  16/5

     x=3.2  

10(3.2)-12

32-12

   20

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart