There are 4.
An equivalent expression.
69 is an equivalent expression.
y-x5 is an expression. An expression is not equivalent to any equation.
A cubed
There are 4.
34 is an equivalent expression.
The expression 9+5 is equivalent.
If an algebraic expression is equivalent to another algebraic expression then it is an equation.
1/25
Which expression is equivalent to cot t sec t
The expression -28x+35 is equivalent to 7y(-4x+5)
3.092 is equivalent to 3.0920
22
25xy is an equivalent expression.
10
15 1/2