\(\left|-x+7\right|=8\Leftrightarrow\left[{}\begin{matrix}-x+7=8\\-x-7=-8\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=-1\\x=1\end{matrix}\right.\)
1/ x + 1/2 = -5/3 6/ x - 1/5 = 9/10
2/ 1/3 - x = 3/5 7/ x + 5/12 = 3/8
3/ 3-4 + x = 7/2 8/ x + 5/4 = 7/6
4/ x - 4/3 = -7/9 9/ x - 2/7 = 1/35
5/ x - -7/3 = 5/6 10/ x - 1/5 = -7/10
điền số nguyên x thích hợp
-8/3 + - 1/3 < .........< -2/7 + -1/7
5/21 + -3/7 < x/21 < -2/7 + 21/8
5/3 + - 14 /3 < x < 5/8 + 18/10
(1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 0)*( 9 - 8 + 7 - 6 + 5 - 4 - 3 + 2 - 1)*( 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 ×9)*(1-1+2-2+3+4-7)=?
Tính nhanh
Các bạn viết luôn kết quả cho mình nha😂😂😂😂😂😂😂😂
1/ x + 1/2 = -5/3
2/ 1/3 - x = 3/5
3/ 3-4 + x = 7/2
4/ x - 4/3 = -7/9
5/ x - -7/3 = 5/6
6/ x - 1/5 = 9/10
7/ x + 5/12 = 3/8
8/ x + 5/4 = 7/6
9/ x - 2/7 = 1/35
10/ x - 1/5 = -7/10
Tìm số nguyên x, biết:
a, (-4).|x+2|= -8
b, 4.|x+1|= 8.(-2)-8.(-5)
c, (2.x-4).(x+6)=0
d,4.(x-5)-3(x+7)= -19
e, 3.(x-4)-(8-x)=12
f, 7.(x-3)-5.(3-x)=11.x-5
Tìm \(x\):
\(\dfrac{x}{7}-\dfrac{7}{8}=\dfrac{-25}{56}\)
Tìm x a, 5/8 -x = 7/6 b, 1/6 + 1/5 :x =-7 /18
\(\dfrac{6}{13}\) x \(\dfrac{8}{7}\) + \(\dfrac{6}{13}\) x \(\dfrac{9}{7}\) - \(\dfrac{3}{13}\) x \(\dfrac{6}{7}\)
Help me please
Tìm X biết :
(7*13-8*13):(8+21-X)=39
( x -7 ) . ( 8 + x ) = 0
