Question

solve the give :-
(a)
$7n - 80 = 10$
(b)
$\frac{7}{5} + \frac{3}{5}$
(c)
$\frac{n}{4} + 10 = 30$

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Answer 1

Step-by-step explanation:

a.

$7n - 80 = 10 \\ \\ = > 7n = 80 + 10 = 90 \\ \\ = > n = \frac{90}{7}$

b.

$\frac{7}{5} + \frac{3}{5} = \frac{7 + 3}{5} = \frac{10}{5} = 2$

c.

$\frac{n}{4} + 10 = 30 \\ \\ = > \frac{n + 40}{10} = 30 \\ \\ = > n + 40 = 30 \times 10 = 300 \\ \\ = > n = 300 - 40 = 260$

Answer 2

Answer:

a. 7n = 90

n = 90/7

b. 7/5 +3/5 = 10 / 5

2/1

c. n / 4 + 10 = 30

n/4 = 30 - 10 = 20

n = 4( 20 )

n = 80

I hope you understand from this solution