For each expression, write an equivalent expression that uses only addition. 20−9+8−7
4x−7y−5z+6
-3x−8y−4−87z

Tiara buys the pizza shown below: a circular pizza is shown. the edge of one slice is marked ab. what does the curve ab represent?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent