Another URGENCY
(5a+3b-6c) + (2a-4b+13c)

7a-b+7c

Step-by-step explanation:

(5a+3b-6c) + (2a-4b+13c)

=5a+3b-6c+2a-4b+13c

=5a+2a+3b-4b-6c+13c

=7a+3b-4b-6c+13c

=7a-b-6c+13c

=7a-b+7c

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

hello, sorry being so rude after all that fighting i found it kind of funny, so as me saying sorry here is an answer!

since the table showed her that   2km = 2000m.

to determine, how many km in 2000m, she would divide by 1000.

= 2000 / 1000 = 2 km.

similarly, for 8000m = 8000 / 1000 = 8 km

cheers to savings

~

your pal papaguy