Question

twice some number is subtracted from 30 and the result is 50

Answer 1

Step-by-step explanation:

let the number to be x

2x - 30 = 50

2x = 50+30

2x = 80

x = 40

This is the correct answer of this question.

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Answer 2

Answer:

Answer x = -10

Step-by-step explanation:

Let the number be x

Twice some number = 2x

Subtracted from 30 = 30 - 2x

Result is 50

= 30 - 2x = 50

-2x = 50 - 30

-2x = 20

x = 20/-2

x = -10

Verification

30 - 2x = 50

30 - 2(-10) =50

30 + 20 =50

50 = 50

Verified