Express Symbolically, Using Variables, the General Properties in Algebra That $( 400 + 25 ) \times 3 = ( 400 \times 3 ) + ( 25 \times 3 )$

Essay

Express symbolically, using variables, the general properties in algebra that are illustrated.
A) $( 400 + 25 ) \times 3 = ( 400 \times 3 ) + ( 25 \times 3 )$
B) $( 57 \times 16 ) + ( 43 \times 16 ) = ( 57 + 43 ) \times 16$
C) $( 600 + 32 ) \div 4 = ( 600 \div 4 ) + ( 32 \div 4 )$
D) $\frac { 75 + 18 } { 3 } = \frac { 75 } { 3 } + \frac { 18 } { 3 }$