Choose all of the expressions that are equal to −9. |−9| −(−9) −|−9| −|9| the distance from zero to nine the opposite of nine

-|-9|, -|9|, the opposite of nine

-|-9|,-|9|, and the opposite of nine. When a number is in | | it means it's the absolute value of the number. The absolute value of -9 is 9, and the absolute value of 9 is 9. It doesn't matter what sign it has. Since the negative symbols are outside of the | | it would equal -9

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

the value of x is equal to 0.