4. Algebra and Matrices
Interactive practice questions
Find the value of $x$x if:
$x+4=9$x+4=9
Easy
< 1min
Make $x$x the subject of the following equation:
$y=\frac{x}{4}$y=x4
Easy
< 1min
Make $x$x the subject of the following equation:
$y=x+z$y=x+z
Easy
< 1min
Solve $D=RT$D=RT for $R$R.
Easy
< 1min
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