Answer:
3 × 13 - 21 is an expression.
5(a + 9) is an expression.
36 - (6 × 4) is an expression.
6a + 6 is an expression.
B+9 is an expression.
29 - 12 =7 is an equation.
3(c+5 ) = 27 is an equation.
C - 15 = 44 is an equation.
5(× + 5) = 65 is an equation.
48 - 4m = 32 is an equation.
Step-by-step explanation:
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