Make r the subject of the formula x = (3r - 4)/5
Multiply both sides by 5: 5x = 3r - 4Add 4 to both sides: 5x + 4 = 3rDivide both sides by 3: (5x + 4)/3 = r
OM
Related Maths GCSE answers
All answers ▸Shampoo is sold in two sizes. 1) 500 ml for £1.98 2) 3 litres for £12.80 (now 15% off). Which is better value for money?
How to differentiate 9x^2+ 4x-7=0
What is the name of a triangle with two equal sides and angles? What is the size of the angle x?
Find the inverse of f(x) = 7x+4