Question

5.25(5+x) - 5.25(5-x) ans =10.5 but how

Answer 1

5.25*5 +5.25*x - 5.25*5 +5.25*x
26.25 + 5.25x - 26.25 +5.25x
5.25 x + 5.25x
10.5x

Answer 2

5.25(5+x)-5.25(5-x)
=26.25+5.25x-26.25+5.25x
=10.25x