For example: \(a,\;m,\;z,\) etc can be used as variables.
Example: \(2(8+6)\)
Example: \(6x+7,\;2z,\;3y-3\) etc.
A \(3(4+7)\)
B \(71(21\div7)\)
C \(2x+1\)
D \(27(21-17)\)
For example: \(x+5\) can be written as
"A variable is added to \(5\)"
or
"Sum of a variable and \(5\)"
or
"\(5\) more than a variable"
A \(10\) more than \(x\)
B \(10\) less than \(x\)
C \(10\) times \(x\)
D \(x\) less than \(10\)
Example: \(x-5\) can be written as
"\(5\) less than a variable"
or
"\(5\) subtracted from \(x\)"
Note: Always take care that \(5\) subtracted from \(x\) represents \((x-5)\). It is not same as \(x\) subtracted from \(5\) which is \((5-x)\).
A \(7\) less than \(x\)
B \(7\) more than \(x\)
C \(x\) less than \(7\)
D \(7\) times \(x\)
For example: \(7x\) can be written as
"\(7\) times \(x\)"
or
"\(7\) multiplied by \(x\)"
or
"Product of \(7\) and \(x\)"
Note: By commutative rule, \(xy\) is same as \(yx\).
A \(20\) times \(x\)
B \(20\) divides \(x\)
C \(x\) divides \(20\)
D \(x\) more than \(20\)
For example: \(\dfrac{10}{x}\) can be represented as
"\(10\) divided by \(x\)"
or
"\(10\) by \(x\)"
Note: It should be taken care that \(10\) by \(x\) represents \(\left(\dfrac{10}{x}\right)\). It is not same as \(x\) by 10 which is \(\left(\dfrac{x}{10}\right)\).
A \(x\) divided by \(10\)
B \(10\) divided by \(x\)
C \(10\) times \(x\)
D \(x\) more than \(10\)