Question

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Answer 1

146.
$m^{(11/14)+(1/6)+(5/7)} = m^{70/42}$ 
При m=216=6^3  
$6^{3*70/42}= 6^{5}$

147.
$x^{(4/10)-(1/12)-(1/15)}= x^{15/60} = x^{1/4}$
При x=256=2^8      
$2^{8/4} = 2^{2} = 4$