3.(x+1)-32=67
=> 3(x+1)=67+32
=> 3(x+1)=99
=> x-1=99:3
=> x-1=33
=> x=33+1
=> x=34
3.(x+1)-32=67
3.(x+1)=67+32
3.(x+1)=99
x+1=99:3
x+1=33
x = 33 - 1
x= 32
3(x+1)-32=67
<=>3x+3-32=67
<=>3x=67-3+32
<=>3x=96
<=>x=96:32
<=>x=32
3.(x+1)-32=67
=> 3(x+1)=67+32
=> 3(x+1)=99
=> x-1=99:3
=> x-1=33
=> x=33+1
=> x=34
3.(x+1)-32=67
3.(x+1)=67+32
3.(x+1)=99
x+1=99:3
x+1=33
x = 33 - 1
x= 32
3(x+1)-32=67
<=>3x+3-32=67
<=>3x=67-3+32
<=>3x=96
<=>x=96:32
<=>x=32
Tìm x, biết:
a ) | x | = 4 − 3 + 7 4 ; b ) | x − 4 | = − 6 7 + 3 2 ; c ) x − 1 2 = − 7 10 + 9 4 ; d ) x − 7 9 = 7 12 + 5 3 − 11 4
1) thực hiện phép tính
-126+67+[32-(-126)]-64
240-[(82-49):3+135]:18
A+1+2+22+23+...+22021
-205+37-(-200)
2) Tìm x∈z biết
x-45=48-68
35+5(6-x)=-12-(-112)
517-(x-124)=-483
46-(3x-2)3=(-38)+20
1) thực hiện phép tính
-126+67+[32-(-126)]-64
240-[(82-49):3+135]:18
A+1+2+22+23+...+22021
-205+37-(-200)
2) Tìm x∈z biết
x-45=48-68
35+5(6-x)=-12-(-112)
517-(x-124)=-483
46-(3x-2)3=(-38)+20
a ( -o, 75+ 1/2) ;4/3
b 7/5 , 7/4 -32/5
tim x
10/3,x + 67/4= -13,25
(-5).8.(-3).(-2)^3
125-(-75)+32-(48+32)
3.(-7)^2+2.(-15)-273
tìm x
39-(x-27)=67
55-/7-2.x/=-8
3.(x-5)-2(x+6)=-56
Tính nhanh:
a, 32 x 11 + 32 x 67 + 78 x 68
b, 76 x 41 + 21 x 24 - 76 x 20
Tính nhanh
a) 31/23 - (7/32 + 8/23)
b) 38/45 - (8/45 - 17/51 - 3/11)
c)(1/3 + 12/67 + 13/41) - ( 79/67 - 28/41)
d) 1/5 + -1/6 + 1/7 + -1/8 + 1/9 + 1/8 + -1/7 + 1/6 + -1/5
2/15-2/65-4/39
32/13-(7/23+8/23)
(1/3+12/67+13/41) - (79/67 - 28/41)
38/45 - (8/45-17/51-3/11)
9/10 - 13/75 - 1/6
2/15 - 2/65 - 4/39
31/23 - (7/32 + 8/23)
(1/3+12/67+13/41) - (79/67 - 28/41)
38/45 - (8/45 - 17/51- 3/11)