Please help and show work! Simplify each expression! -7y - (-12y) =

15xy- (-6xy) =

-53va - 32va

Answer the expressions and show work please!

64 / 0.8 -5.6 / 7 =

Use the distributive property to simplify the expression. Show work!

-(x -3) + 6 =

Use order of operations to evaluate the expression.

Show work please!

6 + 3 (9) =

Evaluate the expressions if x = 10, y = 5, and z = 1.

x/y =

xy + z

5 (z - x)

Please answer all of these questions correctly and show work! I really need this! I'm putting 50 points and I'll choose brainliest!

See below

Step-by-step explanation:

Evaluate the expressions if x = 10, y = 5, and z = 1.

see below

Step-by-step explanation:

⇒  -7y - (-12y) = -7y + 12y =  5y

⇒  15xy - (-6xy) = 15xy + 6xy = 21xy

⇒  -53va - 32va =    - 85av

⇒  64 / 0.8 -5.6 / 7

   = 448 - 7.48

          5*6

    = 79.2

⇒    -(x -3) + 6

   = -x + 3 + 6

   = -x + 9

⇒  6 + 3 (9)

   = 6 + 27

   = 33

Evaluate the expressions if x = 10, y = 5, and z = 1.

⇒  x/y = 10 / 5 = 2

⇒  xy + z = 10*5 + 1 = 51

⇒  5 (z - x) = 5(1 - 10) = 5 - 50 = 45

answer: ask

step-by-step explanation:

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)