Question

Evaluate 7r -\dfrac{15}s7r−
s
15
​ 7, r, minus, start fraction, 15, divided by, s, end fraction when r=3r=3r, equals, 3 and s=5s=5s, equals, 5.

Answer 1

Answer:

$7r-\frac{15}{s}=18$ when r=3 and s=5.

Step-by-step explanation:

Given : Expression $7r-\frac{15}{s}$ when r=3 and s=5

To find : Evaluate the expression ?

Solution :

Expression $7r-\frac{15}{s}$

Substituting, r=3 and s=5

$7r-\frac{15}{s}=7\times 3-\frac{15}{5}$

$7r-\frac{15}{s}=21-3$

$7r-\frac{15}{s}=18$

Therefore, $7r-\frac{15}{s}=18$ when r=3 and s=5.

Answer 2

Answer:

the answer is 18

Step-by-step explanation: