Question

Simplify: $3\times 7\times 5\times 1–3+3$

Answer 1

The expression $3\times 7\times 5\times 1–3+3$ has multiplication, subtraction and addition.

By PEMDAS rule, we must perform multiplication, then addition and followed by subtraction.

$\Rightarrow (3\times 7\times 5\times 1)-3+3=\left(105\right)-3+3$
Now, as addition and subtraction are at the same level, we move from left to right.

$\Rightarrow 105-3+3$
$=102+3$
$=105$