Toán Lớp 7: 1.Thực hiện phép tính: a.(-1/3)^2:1/6-2.(-1/2)^3 b.-1/5-(1/2+3/4)^2:5/8 c.(-1/2)^2+(7/8)^0-(-2) d.1/2.căn 169-căn 1/16 e.I-3/7I:(-3)^2-

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Toán Lớp 7:  1.Thực hiện phép tính: a.(-1/3)^2:1/6-2.(-1/2)^3 b.-1/5-(1/2+3/4)^2:5/8 c.(-1/2)^2+(7/8)^0-(-2) d.1/2.căn 169-căn 1/16 e.I-3/7I:(-3)^2-căn 4/49 2.Tìm x,bt a.1/2-x=5/6 b.Ix-3/4I-1=2/3 helpp mn lm đầy đủ chi tiết jup mk vss Mk đg cần gấpppp

ngoclandiep · Answer

1.Thực hiện ph&eacute;p t&iacute;nh:      a.(-1/3)&sup2;  : 1/6 - 2 (-1/2)&sup3; (pic 1)     b.-1/5 - (1/2 + 3/4)&sup2; : 5/8 (pic 1)     c.(-1/2)&sup2;+$(7/8)^{0}$ - (-2) (pic 2)    d.1/2 . &radic;169 - &radic;1/16 (pic 2)   e.I - 3/7 I : (-3)&sup2;- &radic;4/49 (pic 4)       2.T&igrave;m x,bt      a.1/2 - x = 5/6 (pic 2)     b.| x - 3/4 | - 1= 2/3 (pic 3)              @su           kịp ko ạ!     do mạng nh&agrave; mk lag qu&aacute; ạ!     sorry bạn rất nhiều ạ!!!!!!!!!!!!!!!!!!!!!!!!!     &darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;&darr;