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

If a balloon takes up 625L at 273K, what will the new volume be when the balloon is heated to 353K.

URGENT PLEASE HELP1. Use the rules of divisibility to check which of the followingnumbers are multiples of (are divisible by) 2,3,4,5,6, 8, 9 and 10a) 552b) 315

Which character from Achebe Things fall apart is best described as the protagonist foil

in a uniform electric field ,the magnitude of the force on a charge of 0.2 coulomb is 10 Newton. Calculate the field intensity

HELP PLS!! WILL GIVE BRAINLIEST What is a catalyst? A a substance that slows a reaction down without being used up itself in a reaction. B a substance that is u

The value of 3x+2 is 9 plus twice the value of x+5. What is x?

Use the words that you know to write about a fictitious friend. You must use at least eight words dealing with parts of the body. Write about your friend's pers

plz answer asap will mark brainliest

Find the ordered pairs. {Y=(x+1)^2-5 {Y=2x PLEASE HELP!!!

c. Why target market trade is executed