xxalinax50 xxalinax50

01-09-2020
Mathematics

contestada

Solve for the variable!
1. 2x + 21 = 40
2. 4x - 12 = 3x + 9
3. 3(x -1) + 2 = 7x

Respuesta :

01-09-2020

Step-by-step explanation:

1. 2x + 21 = 40

2x = 40 - 21

2x = 19

x = 19/2 = 9.5

2. 4x - 12 = 3x + 9

4x - 3x = 9 + 12

x = 21

3. 3x - 3 + 2 = 7x

3x - 1 = 7x

-1 = 7x - 3x

-1 = 4x

4x = -1

x = -1/4

= - 0.25

Answer Link

Otras preguntas

the temperature started at 89°f. if the temperature went up 6°f and then down 12°f, how many degrees above or below the high is the temperature?

what is the majority religion in the united states?

what is holistic health care

Ken went to the store for his mother. he spent $2.37 on groceries. in addition, his mother said he could spend 35¢ on candy. what was his change from a five dol

convert: 17 kg = ________ lb a. 37.4 b. 7.73 c. 385 d. 374

what molecule is a compoun

all of the following are true statements about industrialization in the south after the Civil War except which of the following

What is difference between 2.71 hundredths and 2.67 hundredths?

compare and contrast Shakespeare sonnet 116 and 55

The cast of a play had a party. There were 20 cookies and 40 carrot sticks as a refreshment. Each cast member ate the same number of cookies and carrot sticks.