Can somebody with these two? i'll mark brainliest for your answer!

1: how do you find 3 4/5x - 2 1/2 for x = -10 step by step?

2: simplify the expression step by step, listing the property of operations used.
-5/6 x (-5/8) x 6/5 =

you so much!

1.

2.

Step-by-step explanation:

1. We are given an expression that is . We have to find its value for x = - 10

So,  

=

= {Putting the value of x}

=

=

= (Answer)

2.

=

= (Answer){Since }

2,600 divided by 80 = 32.5

step-by-step explanation:

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.