4(3x-7) = 8

First multiply out the bracketsMultiply each component within the bracket by 4 (4 x 3x) + (4 x -7) = 812x - 28 = 8 Now you want to ensure you have the x's on their ownYou can eliminate the -28 by adding 28 to BOTH SIDES This leaves you with 12x = 36Now to get x alone you want to divide both sides by 12 This leaves you with x = 3 In order to check your answer you can substitute x = 3 back into the equation and see if it adds up correctly

JH
Answered by Jack H. Maths tutor

2796 Views

See similar Maths KS3 tutors

Related Maths KS3 answers

All answers ▸

Simplify 23/5 into a mixed number fraction


Anton, Barbara and Clive are buying pens from the shop. Anton needs 4, Barbara needs 7, Clive needs 11. Pens only come in packs of 10. How many packs of pens do they need to buy between them?


Solve the following simultaneous equations: a + 3b = 12, 4a - 3b = 18 (KS3 2010 Paper 2)


Why do you put the quadratic equation equal to zero when you want to find it’s roots?


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning