Question

If 3x=81,then find value of 3x-4 and 9x-4

Answer 1

Step-by-step explanation:

3x=81

x=27

3x-4=3.27-4

=81-4

=77

9x-4=9.27-4

=243-4

=239

Answer 2

If 3x = 81, then the value of 3x - 4 and 9x - 4 are 77 and 239 respectively

Solution:

Given that,

3x = 81

Then on solving we get,

x = 27

Now let us find 3x - 4

3x - 4 = 3(27) - 4 = 81 - 4 = 77

Thus 3x - 4 is equal to 77

Now let us find 9x - 4

9x - 4 = 9(27) - 4 = 243 - 4 = 239

Thus 9x - 4 is equal to 239

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