1.Tính:
a; 0,25 x 2\(\dfrac{1}{3}\) x 30 x 0,5 x \(\dfrac{8}{45}\)
b; \(\dfrac{7}{12}\) + \(\dfrac{5}{12}\) : 6 + \(\dfrac{11}{36}\)
2.Tìm x :
( \(\dfrac{242}{363}\) + \(\dfrac{1616}{2121}\) ) = \(\dfrac{2}{7}\) . x
giúp mình nhé
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Toán lớp 6
