Question

3. Solve the equation: 21-3(x– 7) = x + 20​

Answer 1

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Answer 2

Answer:

x = 2

Step-by-step explanation:

21 - 3(x - 7) = 20 + x

21 - 3x + 21 =20 + x

21 - 3x =20 - 21 + x

21 - 3x = x-1

21 + 1 = 3x + x

22 = 4x

4x = 22

x = 22/4

x = 11/2