7 x a

Answer 1

7 x a is written as ' 7a '

In algebra Plus is shown as ' a + b '

Minus is shown as ' a - b'

Multiplication is shown as 'ab' . NEVER a x b , as the 'x' may be confused with an unknown value.

Division is shown as ' a/b ' , like a fraction.

e.g.

6a^(2) + 5b - 2c/3 means

Six multiplied to 'x' and them multiplied to 'x' again (squared). Then you 'add' five multiplied to 'b' , then you subtract two multiplied to 'c' and the whole '2c' is divided by '3'.

The divisional three only refers to the '2c'. If you wanted to divided the whole expression by '3' , then you insert brackets.

[ 6a^(2) + 5b - 2c ] /3

Note the position(s) of the 'square brackets'.

Answer 2

The relevant expression is 7a.

Answer 3

7a