x*1,2+x*1,8=45
<=> x*( 1,2+1,8)=45
<=>3*x=45
<=> x=45:3=15
Vậy x=15
\(x\times1,2+x\times1,8=45\)
\(x\times\left(1,2+1,8\right)=45\)
\(x\times3=45\)
\(x=45\div3=15\)
Chúc bạn học tốt ^^!!!
\(x\times\left(1,2+1,8\right)\)\(=45\)
\(x\times3=45\)
\(x=45\div3\)
\(x=15\)
\(\text{Vậy x = 15
Chúc bạn hok tốt !}\)
\(x.\frac{1}{2}+x.\frac{1}{8}=45\)
\(x.\left(\frac{1}{2}+\frac{1}{8}\right)=45\)
\(x.\frac{5}{8}=45\)
\(x=72\)
nhầm bn ==
\(x.1,2+x.1,8=45\)
\(x.\left(1,2+1,8\right)=45\)
\(x.3=45\)
\(x=15\)