2.3x+2+4.3x+1=10.36
=>2.3.3x+1+4.3x+1=10.36
=>(6+4).3x+1=10.36
=>10.3x+1=10.36
=>3x+1=36
=>x+1=6
=>x=5
2.3x+2+4.3x+1=10.36
=>2.3.3x+1+4.3x+1=10.36
=>(6+4).3x+1=10.36
=>10.3x+1=10.36
=>3x+1=36
=>x+1=6
=>x=5
5 .18-10.27+15.36/10.36-20.54+30.72
Tìm x, biết: a) 121-(115+x)= 3x-(25-9-5x)-8
b)2x+2.3x+1.5x = 10800
c) (3|x-1/2) . (8/15-1/5)+2/3-1
d) x+1/2022 + x+2/2021= x+3/2020 + x+4/2019
Tính nhanh
a)\(\frac{120-\left(-0,5\right).\left(-40\right).\left(-5\right).\left(-0,2\right).20.0,25}{5+10+15+...+1995}\)
b)\(\frac{5.18-10.27+15.36}{10.36-20.54+30.72}\)
c)\(\left(\frac{1}{2}-1\right)\left(\frac{1}{3}-1\right)\left(\frac{1}{4}-1\right)...\left(\frac{1}{1999}-1\right)\)
Tìm x trong đẳng thức
a, 5^-3.25^x - 5^3x
b, 3^(2x+6).(3x+9) = 1
c, 1/3.3^x = 73^2.9^2-2.3x
d, 9^x+1-5=3^2=324
Gíup mk vs mn ơi.. ❤❤
a/(\(\frac{2}{3}-\frac{3}{4}\))2 x\(\frac{12}{7}-\frac{5}{7}\)
b/ 3.5 + \(\sqrt{1.96}-\sqrt{10.36}\)
làm giúp nha mai phải nộp rùi....
ngày 18/10/2016 là hạn nộp....
thanks nha....
5.18-10.27+15.36
10.36-20.54+30.72 cái đường thẳng ở trên là phần nhé!
1+1+1+1+1+1++1+1+1++1++1+1+1+1+1+1+1++1+1+1+1+1+1+1++1+1+1+1+1++1+1+1+1++1+1++12+2++2+32+234+4+2+54+53+256+53+5+5+35+3+35+35+35+35++35+523+235++5+ -20000000000020304004005020=?
1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1= bao nhiu
cơ hội kiếm điểm
ai nhanh nhất nha