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y = (x/3) - 14. Rearrange this equation to make x the subject.

The aim of this question is to end up with 'x' standing by itself on one side of the equation. The key principle to achieve this is to understand that whatever you do to one side of the equation, you have...

Answered by Maximilian G. • Maths tutor

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Dominik hires a satellite phone. His total hire charge is £860. For how many weeks did he hire the phone? (Total hire charge = No. of week X 90 +50)

Rearrange the formula so that it is equal to what the question is asking for (no. of weeks)_{What you have to do to one side you must do to the other!}Total hire ch...

Answered by Grace K. • Maths tutor

4256 Views

f(x)=2x+c, g(x) = cx+5, fg(x)= 6x+d, work out the value of d

Let’s call (f(x)=2x+c) equation 1, (g(x) = cx+5) equation 2 and (fg(x)= 6x+d) equation 3.
Start by finding fg(x) in terms of c by substituting (equation 2) into (equation 1) to get (fg(x)= 2(cx +5) +...

Answered by Anna M. • Maths tutor

3660 Views

Solve the equation: x^2+x-12=0

x=-4, x=3

Answered by Jordan H. • Maths tutor

3109 Views

Solve the simultaneous equations 3x + y = -4 and 3x - 4y = 6

When solving simultaneous equations our goal is always to use the equations given, which each have two unknowns in them, in order to find an equation with only one unknown. In this example, we can see tha...

Answered by Sofya E. • Maths tutor

19968 Views