(X × 84,28) + (x × 15,72) = 425,9 + 34,8

(X × 84,28) + (x × 15,72) = 460,7

X × 84,28 + x × 15,72 = 460,7

X × (84,28 + 15,72) = 460,7

X × 100 = 460,7

X = 460,7 : 100

X = 4,607

x:125=\(\frac{69}{115}\)

x=\(\frac{69}{115}\times125\)

x=75

mình ko biết làm

75nhe

`x xx 95 + x + x : 0,25 = 7963`

`x xx (95 + 1 + 4) = 7963`

`x xx 100 = 7963`

`=> x = 79,63`.

\(x\times\left(95+1+4\right)=7963\)

\(100\times x=7963\)

\(x=79,63\)

\(=>x\left(95+1+4\right)=7963\)

\(x=\dfrac{7963}{95+1+4}=\dfrac{7963}{100}=79,63\)

`x xx95+x+x:0,25=102,34`

`x xx95+x+x xx4=102,34`

`x xx(95+1+4)=102,34`

`x xx100=102,34`

`x=102,34:100=1,0234`

`x xx 95 + x + x :0,25 = 102,34`

`x xx 95 + x + x xx 4 = 102,34`

`x xx ( 95+1+4)=102,34`

`x xx 100 = 102,34`

`x = 102,34 : 100`

`x = 1,0234`

`x xx95+x+x:0,25=102,34`

`x xx(95+1+4)=102,34`

`x xx100=102,34`

`x=102,34:100`

`x=1,0234`

\(x\left(45+1+54\right)=9872\)

\(x\times100=9872\)

\(x=9872:100\)

\(x=98.72\)

X x45 + X +X x 54 =9872

X x45 + Xx1 +Xx54=9872

X x ( 45 + 1 + 54)   = 9872

X x           100         = 9872

X                             = 9872 : 100

X                             = 98,72

98,72

x¹⁵=x

=> x = 1 hoặc x = 0.

Vậy x = 1 hoặc x  = 0.

    \(x+x+x+81=-3-x\)

⇔\(4x=-84\)

⇔\(x=-21\)

`x-(5/6 -x) =x-2/3`

`x-5/6 +x -x+2/3 =0`

`x = 5/6-2/3 = 5/6 -4/6 = 1/6`

bạn có thể giải chi tiết hơn dc ko TV Cuber

\(x\times103-x\times1-x:0,01=44,8\)

\(x\times103-x\times1-x:\dfrac{1}{100}=44,8\)

\(x\times103-x\times1-x\times100=44,8\)

\(x\times\left(103-1-100\right)=44,8\)

\(x\times2=44,8\)

\(x=44,8:2\)

\(x=22,4\)

= x x 103 - x x 1 - x x 100 = 44,8 

\(x\left(103-1-100\right)=44,8\)

\(x\times2=44,8\)

\(x=22,4\)

= x x 103 - x x 1 - x x 100 = 44,8