Question

7n-4=5+5.7(n+5) please help me answer

Answer 1

n=29

Explanation:

7n-4=5+5.7(n+5)

5.7n+28.5

-5.7n

+5

1.3n-4=33.5

+4

1.3n=37.5

÷1.3

n=28.846...

n=29(1dp)

Answer 2

7n - 4 = 5 + 5.7(n+5)

7n - 4 = 5 + 5.7n + 28.5

move 5.7n to the right side, -4 to the right side.

7n - 5.7n = 5 + 28.5 - (-4) = 37.5

1.3 n = 37.5

n = 37.5 / 1.3 = 28.84615...