bookworm2020 bookworm2020

09-11-2014
Mathematics

contestada

Can some one show how to solve this? The answer is 10

Can some one show how to solve this The answer is 10 class=

Respuesta :

Geekhawk Geekhawk

10-11-2014

-x-1=x-21
Add 1 to each side
-x-1+1=x-21+1
-x=x-20
Minus x from each side
-x-x=x-x-20
-2x=-20
Divide -20 by -2x
If two negatives are divided, it becomes a positive number
-20÷-2x=10
x=10

Answer Link

Otras preguntas

name the type of chemical reaction : CaO(s) + H2O(l) -----------Ca(OH)2(aq)

How do I work out this problem, How many ways can the letters in the word "WISCONSIN" be arranged?

if it is 10;25 p.m. what time was it 11 hours and 55 minutes before that?

A planet has two moons. The first moon has an orbital period of 1.262 Earth days and an orbital radius of 2.346 x 104 km. The second moon has an orbital radiu

Find the distance between the pair of parallel lines, y = x-11 & y = x-7

Name two metals alloyed with iron to make stainless steel.

which part of roots is involved in the exchange of respiratory gases

How do I multiply this?

is 0.7142857.... a rational number? why or why not?

How do I solve 5+ 5\5 + 5x5-5