Tìm
x, biết
x*49+x:10=20,6
x:0,25+x*11=36
\(\frac{3}{2}x-\frac{11}{5}=\frac{7}{8}\times\frac{64}{49}tìmx\)
\(\frac{3}{2}x-\frac{11}{5}=\frac{7}{8}.\frac{64}{49}\)
\(\frac{3}{2}x-\frac{11}{5}=\frac{8}{7}\)
\(\frac{3}{2}x=\frac{8}{7}+\frac{11}{5}=\frac{117}{35}\)
\(x=\frac{117}{35}:\frac{3}{2}=\frac{78}{35}\)
\(\frac{3}{2}x-\frac{11}{5}=\frac{7}{8}.\frac{64}{49}\)
\(\frac{3}{2}x-\frac{11}{5}=\frac{8}{7}\)
\(\frac{3}{2}x=\frac{8}{7}+\frac{11}{5}\)
\(\frac{3}{2}x=\frac{117}{35}\)
\(x=\frac{117}{35}:\frac{3}{2}\)
\(x=\frac{78}{35}\)
tìm 𝑥 biết
x+2/7=-49/(x+2)^2
\(\Leftrightarrow\left(x+2\right)^3=343\)
=>x+2=7
hay x=5
x: 0,25 + X x 11 = 36
x: 0,25 + X x 11 = 36
X x 4 + X x 11 = 36
X x ( 4+ 11 ) = 36
X x 15 = 36
X = 36 : 15 ( Tìm thừa số )
X = 2,4
X: 0,25 + X x 11 = 36
X x 4 + X x 11 = 36
X x (4 +11) = 36
X x 15 = 36
X = 36:15
X = 2,4
tìmx biết:
a)(x+1)+(x+3)+(x+5)+....(x+99)=0
b)(x-3)+(x-2)+(x-1)+...+10+11=11
giup mk voi .mk dang can gấp .
please.
(x+1)+(x+3)+(x+5)+....+(x+99)=0
=> (x+x+x...+x) + (1+3+5+...+99) = 0
=> 50x + 2500 = 0
=> 50x = -2500
=> x = -50
Vậy x = -50
X:0,25+X x 11=36
x:0,25+x*11=36
=>x*4+x*11=36
15*x=36
x=36:15
x=2,4
x:0,25+x*11=36
X * 4 + x * 11 = 36
X * ( 4 + 11) = 36
X * 15 = 36
X = 36 : 15
X = 2,4
X * 4 + x * 11 = 36
X * ( 4 + 11) = 36
X * 15 = 36
X = 36 : 15
X = 2,4
Ai k mk mk k lại!
x : 0,25 + x * 11 = 36
x * 4 + x * 11 = 36
x * ( 4 + 11 ) = 36
x * 15 = 36
x = 36 : 15
x = 2,4
Tìm x biết
x-11/13=15/13
\(x=\dfrac{15}{13}+\dfrac{11}{13}=\dfrac{15+11}{13}=\dfrac{26}{13}\)
\(x=\dfrac{15}{13}+\dfrac{11}{13}\\ x=\dfrac{26}{13}\)
a) x×7,2+4,5×x=17,55 b) x; 0,25+×11=36
\(a,x\times7,2+4,5\times x=17,55\)
\(x\times\left(7,2+4,5\right)=17,55\)
\(x\times11,7=17,55\)
\(x=17,55:11,7\)
\(x=1,5\)
\(b,x:0,25+x\times11=36\)
\(x\times4+x\times11=36\)
\(x\times\left(4+11\right)=36\)
\(x\times15=36\)
\(x=36:15\)
\(x=2,4\)
a: =>11,7x=17,55
=>x=1,5
b: =>x*4+x*11=36
=>15x=36
=>x=2,4
tính nhanh
a, 50 x 24,5 + 49 x 24,5 + 24,5
b, 792,81 x 0,25 + 792,81 x 0,75 x ( 11 x 9 - 900 x 0,1 - 9 )