Question

Where can we put parentheses in 21 + 21: 7 to make it equivalent to 6?Choose 1 answer:21+ (21 = 7)(21 +21) = 7Stuck? Review related articles/videos or use a hint.Report a probl

Answer 1

we have the expression

21 + 21: 7

so

the expression must be

(21 + 21): 7

solve the parenthesis first ------> by applying PEMDAS

42:7=6

therefore

the answer is (21 + 21): 7