\(\left(39\times42-37\times42\right):42\)
\(=\left[42\left(39-37\right)\right]:42\)
\(=42.2:42=84:42\)
\(=2\)
\(\left(39\cdot42-37\cdot42\right)\text{ : }42\)
\(=\left[42\left(39-37\right)\right]\text{ : }42\)
\(=\left[42\cdot2\right]\text{: }42\)
\(=84\text{ : }42\)
\(=2\)
\(\left(39\cdot42-37\cdot42\right)\text{ : }42\)
\(=\left[42\left(39-37\right)\right]\text{ : }42\)
\(=\left[42\cdot2\right]\text{: }42\)
\(=84\text{ : }42\)
\(=2\)
( 39 . 42 - 37 . 42) : 42
= [ 42 (39 - 37) ] : 42
= (42 . 2) : 42
= 84 : 42
= 2
(39x42-37x42) : 42
=[42939-370]:42
= 42x2:42
=84: 42
=2
