Make r the subject - picture underneath

The answer is r = 6a / (5m² - 1).

Step-by-step explanation:

The steps are :

r =

Step-by-step explanation:

Given

m = ( square both sides )

m² = ( multiply both sides by 5r )

5rm² = 6a + r ( subtract r from both sides )

5rm² - r = 6a ← factor out r from each term on the left side

r(5m² - 1) = 6a ← divide both sides by (5m² - 1)

r =

25/6 hope it : )

step-by-step explanation: