U guys are smart help 5. Select ALL the expressions equal -9?
A) -12-(-3)
B) -10-1
C) 1-(-8)
D)5-14

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.