xxalinax50
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 :

Annder
Annder Annder
  • 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

wich european country originally settle the colony now called New Nork
mark the statement that is not true. the executive branch mainly interprets the federal laws and upholds or negates them. the executive department is divided in
evaluate 31 2x when x=4
what is the equation of a line that passes through (7,8) and has a slope of -3
Carbon-14 forms nitrogen-14 by a. alpha decay. b. beta decay. c. gamma decay. d. none of the above
a bag of books took 3 minutes to move you did 12900 j if work how much power was required to move the bad
Which is required for the light-independent reactions in photosynthesis to occur? water sunlight oxygen carbon dioxide
Find the measure of the central angle with a radius of 18 inches and the area of a sector measuring 162π square inches
which situational archetype consists of two lovers who go through many trials but find a way to be together in the end?
what is a lifestyle?