Question

Answer 1

`x:0,25+x:0,2-x xx3+x:0,125=7`

`x xx4+x xx5-x xx3+x xx8=7`

`x xx(4+5-3+8)=7`

`x xx14=7`

`x=7:14=1/2`

Answer 2

x : 0,25 + x : 0,2 - x * 3 + x : 0,125 = 7

x * 4 + x * 5 - x * 3 + x * 8 = 7

x * (4 + 5 - 3 + 8) = 7

x * 14 = 7

x = 7 : 14

x = 1/2

Answer 3

=> \(x\times\left(4+5-3+8\right)=7\)

\(x=\dfrac{7}{4+5-3+8}=\dfrac{1}{2}=0,5\)

Answer 4

X x 4 + X x 5 - X x 3 + X x 8 = 7

X x ( 4 + 5 - 3 + 8 ) = 7

X x 14 = 7

X = 7 : 14

X = 0,5