Question

If 2 7x-7 =1 then x=​

Answer 1

Answer:

27x-7=1

27x=1+7

27x=8

x=8/27

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Answer 2

Answer:

Given equation is x

2

+7x=7

⇒x

2

+7x−7=0

Using the quadratic formula, we get:

x=

2×1

−7±

49+28

⇒x=

2

−7±

77

=0.89,−7.89

Thus, there are two values of x i.e 0.89 and −7.89 (correct up to two decimal places)