X * 23 + X * 35 - 1968 = 10270
X x 23 + X x 35 - 1968 = 10270
X x 23 + X x 35 - 1968 = 10270
X x ( 23 + 35 ) - 1968 = 10270
X x 58 - 1968 = 10270
X x 58 = 10270 + 1968
X x 58 = 12238
X = 12238 : 58
X = 211
X x 23 + X x 35 - 1968 = 10270
X x ( 23 + 35 ) - 1968 = 10270
X x 58 - 1968 = 10270
X x 58 = 10270 + 1968
X x 58 = 12238
X = 12238 : 58
X = 211
x * 23 + x * 35 - 1968 = 10270
x * 23 + x * 35 = 10270 + 1968
x * 23 + x * 35 = 12238
x = 12238 : (23 + 35)
x = 211
X x 23 + X x 35 - 1968 = 10270
Tìm x
a) 7804 - X x 6 + 3829 = 5315
b) X x 23 + X x 35 - 1968 = 10270
c) 3(x - 2) - 2(x + 1) = -30
d)42 + (3x + 7) : 2 = 25 + 34
a. 7804 - x . 6 + 3829 = 5315
=> 11633 - x . 6 = 5315
=> x . 6 = 11633 - 5315
=> x . 6 = 6318
=> x = 6318 : 6
=> x = 1053
b. x . 23 + x . 35 - 1968 = 10270
=> x . 58 = 10270 + 1968
=> x . 58 = 12238
=> x = 12238 : 58
=> x = 211
c. 3.(x-2) - 2.(x+1) = -30
=> 3.x - 6 - 2.x - 2 = -30
=> x - 8 = -30
=> x = -30 + 8
=> x = -22
d. 42 + (3x + 7) : 2 = 25 + 34
=> 42 + (3x + 7) : 2 = 32 + 81
=> (3x + 7) : 2 = 32 + 81 - 42
=> (3x + 7) : 2 = 71
=> 3x + 7 = 71 . 2
=> 3x + 7 = 142
=> 3x = 142 - 7
=> 3x = 135
=> x = 135:3
=> x = 45
Xx25+x35-1968=10270
(45-x)/1968 + (40-x)/1973 + (35-x)/1978 + (30-x)/1983 = -4
tham khảo đi Xem câu hỏi
bài này ra x=2013
Suy ra các số hang =-1
45-x =-1968
suy ra x = 2013
Vậy x =2013
tìm x biết 45-x/1968 + 40-x/1973 +35-x/1978+ 30-x/1983= -4
Tìm x biết (45-x)/1963+(40-x)/1968+(35-x)/1973+(30-x)/1978+4=0
45-x/1963+40-x/1968+35-x/1973+30-x/1978+4=0
45-x/1963+40-x/1968+35-x/1973+30-x/1978=-4
(45-x/1963+1)+(40-x/1968+1)+(35-x/1973+1)+(30-x/1978+1)=-4+1+1+1+1
2008-x/1963+2008-x/1968+2008-x/1973+2008-x/1978=0
(2008-x).(1/1963+1/1968+1/1973+1/1978)=0
Vì 1/1963+1/1968+1/1973+1/1978 khac o
2008-x=0
x=2008
k cho minh dau tien nha!
Tìm x biết:((45-x)/1963)+((40-x)/1968)+((35-x)/1973)+((30-x)-1978)+4=0
Tìm x biết 45-x/1968+40-x/1973+35-x/1978+7962-x/1983=0
\(\frac{45-x}{1968}+\frac{40-x}{1973}+\frac{35-x}{1978}+\frac{30-x}{1983}=0\)
Vì \(\frac{1}{1968}+\frac{1}{1973}+\frac{1}{1978}+\frac{1}{1983}\ne0\)
\(\Rightarrow2013-x=0\)
\(\Rightarrow x=2013-0\)
\(\Rightarrow x=2013\)
Vậy \(x=2013.\)
Chúc bạn học tốt!