Join TSR now and get all your revision questions answeredSign up now

How would i go about this Maths Solve question

    • Thread Starter
    Offline

    1
    ReputationRep:
    7x-2=3x+20 ??
    Offline

    3
    ReputationRep:
    7x-2=3x+20
    7x-2-3x=20
    4x-2=20
    4x=22
    x=5.5
    Offline

    2
    ReputationRep:
    Take all the Xs onto one side and all the numbers onto the other then divide through by the number of Xs you have.

    For example 5x + 3 = 2x -15:
    - 2x from both sides
    3x + 3 = -15
    -3 from both sides
    3x = -18
    Divide both sides by 3
    x = -6
    Offline

    3
    ReputationRep:
    (Original post by questioner...)
    7x-2=3x+20 ??
    Collect the x's on one side, collect whats leftover on the other side, divide the whats left over on one side by the coefficient (number infront) of x and you should be done.
    Offline

    0
    ReputationRep:
    7x-2=3x+20
    Bring all the x terms to one side and all the constant terms to the othermaking sure to changethe signs as you move the term, i.e 7x-3x=20+2 from here on in you just simplify the equation, which will give you 4x=22 and then dividing this by 4 will give you x=22/4
 
 
 
Poll
Which party will you be voting for in the General Election 2017?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.