Make 'a' the subject of the formula: p = (3a + 5) / (4 - a)

Firstly, multiply the whole equation by (4 - a) to cancel out the denominator, so the equation becomes: p(4 - a) = (3a + 5). Then expand the brackets: 4p - ap = 3a +5. Then rearrange the equation to: 4p - 5 = 3a + ap, so you can factorise 'a' into brackets: 4p - 5 = a(3 + p). Now make 'a' the subject by dividing (4p - 5) by (3 + p), so your equation becomes: a = (4p - 5) / (3 + p).

GR
Answered by Grace R. Maths tutor

4953 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

In a right angle triangle (where angle ABC is 90 degrees), you are given that angle /_ ACB is 14 degrees and length "AB" is 4. Find the length of "BC".


Calculate (7 + √3)(7 - √3)


The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5. Work out the area of the triangle.


Solve the following equation; 8x-2 > 4x +6


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences