a) x ∈ {-2;-1;;0;1;2;3}
b) x ∈ {10;11;12}
c) x ∈ {0;1;2;3;4;5}
d) x ∈ {-1;0;1;2}
a) x ∈ {-2;-1;;0;1;2;3}
b) x ∈ {10;11;12}
c) x ∈ {0;1;2;3;4;5}
d) x ∈ {-1;0;1;2}
a) x - = b) . c)
) : e) f) .
x
x
d x x x x x
3 13 2 4 3 7 2
1 3
5 25 3 5 10 15 3
4 5 1 7 2 11 1 1
3 15 1 3
5 7 6 5 5 2 3 2
Bài 5. Tìm x biết :
a. (5.x + 3) : 4 – 16 = 6
b. 7(23 – 3.x) : 2 – 35 = 35
tìm x biết
a,3/35-(3/5+x)=2/7
b,5/6+1/6:x=3/4
c,|x-3 4/7|=-0.5
tìm x biết
a,3/35-(3/5+x)=2/7
b,5/6+1/6:x=3/4
c,|x-3 4/7|=-0.5
Tìm x biết x thuộc Z
1/3 + 3/35 < x/210 < 4/7 + 3/5 + 1/35/3 + -14/3 < x > 8/5 + 18/101/2 + 3/4 + 5/6 < x > 3/2 + 5/4 + 7/6tìm x thuộc z biết
a, 28+2x=35-(-13)
b,2(x+1)^2=-7+15
c,-25-(x+5)=415+5(x-83)
d,/x-2/+(-7)=-3
e,8-/x+2/=5
f,(x+1)+(x+3)+(x+5)+.......+(x+99)=0
g, (x-3)+(x-2)+(x-1)+.....+10+11=11
a,-8/3+7/5+-71/15<x<-13/7+19/14+-7/2
b,-19/6+-15/2+11/3<x<-5/4+19/12+-10/3
c,-6/7+3/35<x<-2/5+3/7
d,x=3/4+1/-12
e,x/14=1/7+-3/14
f,11/18+13/6=85/x
g,8/17+5/17<x/17<6/17+9/17
A.50% x hỗn số 1 1/3 x 10 x 7/35 x 0,75
B.1/4 x 8/5 x (5/4)mũ 2 : -4/7
C.6/7 + 5/8 : 5 - 3/13 x (-2)mũ 2
Tìm x biết:
a)\(\frac{2}{3}.\left(x-\frac{3}{8}\right)-x-\left(-\frac{7}{8}+\frac{2}{3}\right)=\left(\frac{-3}{4}\right)^3:1\frac{11}{16}\)
b)\(-\frac{7}{8}+\frac{7}{8}:\left(\frac{2}{3}-x\right)+\frac{5}{6}:\left(-1\frac{11}{35}\right)=\left(0,8\right)^2\)