\(Tinh\)\(hop\)\(ly\)\(:\)
\(a,\left(-234\right)+\left|-145\right|+\left(-2013\right)+\left|+155\right|+\left(-66\right)\)
\(b,\left(-95\right).\left(2-456\right)-456.95\)
\(c,-79.\left|-45\right|-21\left|+45\right|\)
\(d,\)\(29.\left(23+15\right)-23.\left(29+15\right)\)
CAC BAN GIUP MK NHA , AI DUNG THI MK SE TICK CHO
\(Tim\)\(x\)\(biet\)\(:\)
\(a,\)\(37-5.\left(x+9\right)=\left|-17\right|\)
\(b,-2< \left|x+2\right|< 2\)
\(c,-7.\left|x-2013\right|+2012^0=\left|+1\right|\)
\(d,\)\(21+\left(x-10\right)=-19\)
CAC BAN GIUP MK NHA , SAU MK SE TICK CHO NGUOI LAM DUNG ^ _ ^
\(a.35-17+2017-35+\left(-2017\right)\)
\(b.37+\left(-17\right)-37+77\)
\(c.-\left(-219\right)+\left(-219\right)-401+12\)
\(d.|-85|-\left(-3\right).15\)
\(e.11.107+11.18-25.11\)
\(f.115-\left(-85\right)+53-\left(-500+53\right)\)
\(g.\left(-18\right)+\left(-31\right)+98+|-18|+\left(-69\right)\)
\(h.17.\left(15-16\right)+16.\left(17-20\right)\)
\(k.15.\left(-176\right)+15.76+100.15\)
\(l.79.89-79.\left(-11\right)-100.79\)
\(m.153.177-153.77+100.\left(-77\right)\)
\(n.-69.|-45|-31.|45|\)
\(o.\left(-29\right).\left(85-47\right)-85.\left(47-29\right)\)
\(p.\left(-167\right).\left(67-34\right)-67.\left(34-167\right)\)
cứ từ từ mà làm cũng đc
bai 1 :thuc hien phep tinh
a)\(\frac{-5}{2}:\left(\frac{3}{4}-\frac{1}{2}\right)\) b) \(11\frac{3}{13}-\left(2\frac{4}{7}+5\frac{3}{13}\right)\) c)\(\left(\frac{-5}{24}+0,75+\frac{7}{12}\right):\left(-2\frac{1}{4}\right)^2\)
AI LAM NHANH VA DUNG THI MK SE TICK CHO NHA
MK DAG CAN GAP !!!!!!! CAC BAN LAM NHANH LEN NHA
Trong các câu sau, câu nào là câu đúng?
\(\left(1\right)\frac{1}{11}>\frac{111}{1111}\)
\(\left(2\right)\frac{13}{21}>\frac{15}{23}\)
\(\left(3\right)\frac{31}{29}>\frac{25}{23}\)
\(\left(4\right)\frac{234}{345}>\frac{123}{234}\)
1) Tính hợp lý
a)\(\frac{31}{23}-\left(\frac{7}{32}+\frac{8}{32}\right)\)
b)\(\left(\frac{1}{3}+\frac{12}{67}+\frac{13}{41}\right)-\left(\frac{79}{67}-\frac{28}{41}\right)\)
c)\(\frac{38}{45}-\left(\frac{8}{45}-\frac{17}{51}-\frac{3}{11}\right)\)
d)\(\left(\frac{17}{28}+\frac{18}{29}-\frac{19}{30}-\frac{30}{31}\right).\left(-\frac{5}{12}+\frac{1}{4}+\frac{1}{6}\right)\)
tim x
a, \(-7.\left|x-2013\right|+2012^0=\left|+1\right|\)
AI NHANH VA DUNG THI MK SE TICK CHO NHA^_^
Tinh hop ly cac bieu thuc sau
a)\(\left(1-\frac{1}{7}\right)\left(1-\frac{2}{7}\right)\left(1-\frac{3}{7}\right)...\left(1-\frac{2014}{7}\right)\)
b) \(\left(\frac{1}{2}+1\right)\left(\frac{1}{3}+1\right)\left(\frac{1}{4}+1\right)...\left(\frac{1}{99}+1\right)\)
Thực hiện phép tính
a) \(2011+5\left[300-\left(17-7\right)^2\right]\)
b) \(695-\left[200+\left(11-1\right)^2\right]\)
c) \(129-5\left[29-\left(6-1\right)^2\right]\)
d) \(2345-1000:\left[19-2\left(21-18\right)^2\right]\)
Ai làm nhanh mik tick
Rút gọn:
a) \(\left(-15+\left|x\right|\right)+\left(25-\left|-x\right|\right)\)
b) \(x-34-\) [ \(\left(15+x\right)-\left(23-x\right)\) ]
