Question

7. If 7x + 20+2x, the value of x' is
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Answer 1

Answer:

7x = 20 + 2x

→ 7x - 2x = 20

→ 5x = 20

→ x = 20/5 = 4

Answer 2

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7x + 20 + 2x = 0

9x + 20 = 0

9x = - 20

x =$-\dfrac{20}{9}$

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