A) 26
B) 21
C) 25
D) 24
Correct Answer: B
Solution :
\[23\times 3+\_\_\_\_=90,\] Solving the equation, we have \[69+\_\_\_\_90.\] Now to equate this equation we must add 21. Thus the new equation becomes \[23\times 3+21=90.\]You need to login to perform this action.
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