Question

Which of the following is an equation?

a) 7x+6y+7z+8
b) 7-6+8x
c) 3x
d) 14x+8y

Answer 1

usually equations are two expressions that are equal indicated by and equal sign

Answer 2

None of those.

Answer 3

none no equal sign
equation implies of the same value the equal sign is the symbol used between the entities

Answer 4

maybe there was a typo