7. Which algebraic equation tells Tina's age? Ting and Maria are sisters. Tina is older.
The sum of their age is 40.
A. 40 - 12=N
B. 40+ 12=N
C. 40 x 12=N
D. 40 = 12=N
The sum of their age is 40.
A. 40 - 12=N
B. 40+ 12=N
C. 40 x 12=N
D. 40 = 12=N
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