X+2y+z=4

2x-y+4z = -8

-3x+y-2z=-1

Here's a subtraction problem that has been solved incorrectly. 2 1 - 9 1 1 Choose the addition sentence that checks this subtraction problem. A) 21 + 9 30 B) 1 1 + 9 2 0 C) 1 1 + 2 1 3 2

Simplify the following equation: 17x-6+3x-5 = x+11+4x

A particular hybrid car travels approximately 204 mi on 4 gal of gas. Find the amount of gas required for a 714 -mi trip.

Gary bought an MP3 player at a 20% discount sale for $52. What was the original price of the MP3 player?

Make x the subject 4x=y

How do you do a two step equation that has two sides of the equal sign filled like 8x-2=negative 9=7x

The price of a game after a 25% discount was $207. what was the price before the discount

Amy leaves a rest stop at 2 PM traveling west, at 45 miles per hour. Sarah leaves 2 hours later, also traveling west, but at 55 miles per hour.

4) Bill knows that the volume of a rectangular prism is 400 cm'. The box is labeled with the length as 6.5 cm and the width as 1.5 cm. What is the approximate height of the box? How do I find the height of the box?

Which expression is equivalent to complex fraction 3/x-1-4/2-2/x-1