Simplify: $13m-4m\times2$13m−4m×2
Simplify: $2p-6p\times3$2p−6p×3
Simplify $2\left(4x+3x\right)$2(4x+3x)
Simplify the following expression:
$15x+\left(13x-8x\right)$15x+(13x−8x)
Generalise the properties of operations with fractional numbers and integers.