Base 7 can't have any digits higher than 6.
49 (base 10) is 100 in base 7.
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First you can do 49 times 4 first which is 196 and then multiply 196 times 7 which equals 1372
7/49 = 1/77/49 = 1/77/49 = 1/77/49 = 1/7
Explain why 49 -1/2 and -7 are not equivalent
They are 1*49=49 and 7*7=49
7 7 x 7 = 49 so sqrt(49) = 7