Question

Tính nhanh X + X : 0.25 + X x 2 + X : 0.125 = 0.45 Mọi người ơi giúp mình với ạ khó quá

Answer 1

\(x+x:0,25+x.2+x:0,125=0,45\)

\(\Leftrightarrow x+x:\dfrac{1}{4}+x.2+x:\dfrac{1}{8}=0,45\)

\(\Leftrightarrow x+x.4+x.2+x.8=0,45\)

\(\Leftrightarrow x\left(1+4+2+8\right)=0,45\)

\(\Leftrightarrow x.15=0,45\)

\(\Leftrightarrow x=0,03\)

Answer 2

X + X : 0.25 + X x 2 + X : 0.125 = 0.45

X + X x 4 + X x 2 + X x 8 =  0.45

X x (1+4+2+8)= 0.45

X x 15 = 0.45

X= 0.45 : 15

X= 0.03

Answer 3

X x1+X x4+X x2 +X x8 =0,45

=X x (1+4+2+8)=0,45

= X x15=0,45

=X =0,45 : 15

=X =0.03

 

Answer 4

\(x+x:0,25+x\times2+x:0,125=0,45\)

\(x+x\times4+x\times2+x\times8=0,45\)

\(x\times\left(1+4+2+8\right)=0,45\)

\(x\times15=0,45\)

\(x=0,45:15\)

\(x=0,03\)