12+12=?
ai nhanh mk tk
12 * 12 *12 =???
ai nhanh mk tk
12 . 2 + 12 . 8 + 12 * 52 + 12 . 38
ai nhanh mk tk cho
12 .2 + 12.8 + 12.52 + 12.38
=12. ( 2 + 8 + 52 + 38)
=12.100
=1200
Ai nhanh mk tk nhưng phải tk cho mk nha!(trên 15 điểm )
Các bn thông cảm!
12+12=?
x+12=45 tìm x
ai tk mk mk tk lại nha !nhanh
X =33 NHA ZzZ Thiên Hương ZzZ ! ! !
12 -12 + 12 = ?
Ai tk mk mk tk lại
1:1x345-13+12%=?
Ai nhanh mk tk nhớ kb nha mk hết lượt rồi
1 : 1 x 345 - 13 + 12%
= 1 x 345 - 13 + 0,12
= 345 - 13,12
= 331,88
tk nha
1:1*345-13+12%
=345-13+0.012
=332+0.012
=332.012
1 :1x 345 - 13 + 12 %
= 1 x 345 - 13 + 0.12
= 345 -13 +0.12
= 332+0.12
= 332.12
k mk nha
7/12 - 0,75 : (4x-3)^2 = -3/2
giúp mk vói ai nhanh mk tặng 3 tk
\(\frac{7}{12}-0,75:\left(4x-3\right)^2=\frac{-3}{2}\)
\(\frac{3}{4}:\left(4x-3\right)^2=\frac{25}{12}\)
\(\left(4x-3\right)^2=\frac{9}{25}=\left(\frac{\pm3}{5}\right)^2\)
+) 4x - 3 = 3/5
4x = 18/5
x = 9/10
+) 4x - 3 = -3/5
4x = 12/5
x = 3/5
Vậy,.........
\(\frac{7}{12}-0,75:\left(4x-3\right)^2=-\frac{3}{2}\)
\(\Leftrightarrow\frac{7}{12}.12\left(4x-3\right)^2-\frac{0,75}{\left(4x-3\right)^2}.12\left(4x-3\right)^2=-\frac{3}{2}.12\left(4x-3\right)^2\)
\(\Leftrightarrow7\left(4x-3\right)^2-9=-18\left(4x-3\right)^2\)
\(\Rightarrow\orbr{\begin{cases}x=\frac{9}{10}\\x=\frac{3}{5}\end{cases}}\)
\(\frac{7}{12}-0,75:\left(4x-3\right)^2=\frac{-3}{2}\)
\(0,75:\left(4x-3\right)^2=\frac{7}{12}-\frac{-3}{2}\)
\(0,75:\left(4x-3\right)=\frac{7+18}{12}\)
\(0,75:\left(4x-3\right)=\frac{25}{12}\)
\(\frac{3}{4}:\left(4x-3\right)=\frac{25}{12}\)
\(4x-3=\frac{3}{4}:\frac{25}{12}\)
\(4x-3=\frac{3.12}{4.25}=\frac{9}{25}\)
\(4x=\frac{9}{25}+3\)
\(4x=\frac{9+75}{25}\)
\(4x=\frac{84}{25}\)
\(x=\frac{84}{25}:4\)
\(x=\frac{84.1}{25.4}\)
\(x=\frac{21}{25}\)
Vậy \(x=\frac{21}{25}\)
12 + 12 =
13 + 13 =
14 + 14 =
15 + 15 =
Ai nhanh mk tk cho !
12 + 12 = 12 x 2 = 24
13 + 13 = 13 x 2 = 26
14 + 14 = 14 x 2 = 28
15 + 15 = 15 x 2 = 30
^^ Học tốt nhé!
12+12=24
13+13=26
14+14=28
15+15=30
K mink nhé!