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

Which cell wall is the furthest form the plasma membrane in plants

During gym class, Lenny, Lonnie, and Lainey measure the length of their long jumps. Lenny’s jump is ⅔ times the length of Lainey’s, and Lonnie’s jump is 1⅓ time

I’ll give you brainiest who ever answer this right

The passage of blood from the atria to the ventricles is regulated by which valves?.

When did lyndon baines johnson become the president of the united states?

How do you figure out which statement is true?

Michael has 26 shirts to fold. Let N be the number of shirts he would have left to fold after folding F them. Write an equation relating N to F . Then use this

What did the witches prophesied would happen to Banquo? can someone please help me :(

help pls 100 points 11 mins remaining

Ultimately, how long did the montgomery bus boycott last?.