SUMA ICS

a ) X + X = ____________________
b ) 7X + X = 8X
c ) X + 5X = 6X
d ) 3X + 4X = 7X
e ) X + 5X + ____________________ = 7X
f ) X + 3X + 2X + ____________________ = 10X
g ) 8X + X + 5X = 14X
h ) 6X + 3X + ____________________ + X = 11 X