Mathematics: 3-x=5x+21 A: The solution set is (_) Simplified B: There is no solutionPick one and if A then simplify the answer

3-x=5x+21 A: The solution set is (_) Simplified - id35217246385, webbhlharryteach

Ответ:

sabon

31.01.2022

Mathematics

$\boxed{ \sf{ \bold{- 3}}}$

Step-by-step explanation:

$\sf{3 - x = 5x + 21}$

Move 5x to left hand side and change it's sign

⇒ $\sf{ - x - 5x + 3 = 21}$

Move 3 to right hand side and change it's sign

⇒ $\sf{ - x - 5x = 21 - 3}$

Collect like terms

⇒ $\sf{ - 6x = 21 - 3}$

Subtract 3 from 21

⇒ $\sf{ - 6x = 18}$

Divide both sides of the equation by -6

⇒ $\sf{ \frac{ - 6x}{ - 6} = \frac{18}{-6}}$

Calculate

⇒ $\sf{x = -3}$

Hope I helped!

Best regards!!

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Ответ:

christylivingsowzxa2

31.01.2022

Mathematics

x = - 3

Step-by-step explanation:

3 - x = 5x + 21

- x + 3 = 5x + 21

(- x + 3) + (- 3 - 5x) = (5x + 21) + (- 3 - 5x)

(- x + 3) + (- 5x - 3) = (5x + 21) + (- 5x - 3)

- x + 3 - 5x - 3 = 5x + 21 - 5x - 3

- x - 5x + 3 - 3 = 5x - 5x + 21 - 3

- 6x = 18

x = - 18/6

x = - 3

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Ответ:

makailaaa2

14.02.2022

Mathematics

Parallel lines from equation (example 3) | Analytic geometry (video)

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3-x=5x+21 A: The solution set is (_) Simplified
B: There is no solution
Pick one and if A then simplify the answer

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