Equations

Hong Kong

Stage 1 - Stage 3

Make $x$`x` the subject of the following equation:

$y=\frac{x}{4}$`y`=`x`4

Easy

Less than a minute

Make $x$`x` the subject of the following equation:

$y=x+z$`y`=`x`+`z`

Make $m$`m` the subject of the following equation:

$\frac{m}{y}=gh$`m``y`=`g``h`

Make $R$`R` the subject of $V=IR-E$`V`=`I``R`−`E`.

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