help me !!!!!!
x*2,5-3,46=4,68
<=> x*2,5=8,14
<=>x=3,256
Vậy x=3,256
x:1,2+2,15=7,28
<=>x:1,2=5,13
<=>x=6,156
Vậy x=6,156
\(X.2,5-3,46=4,68\)
\(\Leftrightarrow X.2,5=4,68+3,56=8,14\)
\(\Leftrightarrow X=8,14:,25=3,256\)
\(VayX=3,256\)
\(X:1,2+2,15=7,28\)
\(\Leftrightarrow X:1,2=7,28-2,15=5,13\)
\(\Leftrightarrow X=5,13:1,2=6,156\)
\(VayX=6,156\)
Chúc bạn học tốt ~~~
X x 2,5 -3,46=4,68
X x
\(x\times2,5-3,46=4,68\)
\(x\times2,5=4,68+3,46\)
\(x\times2,5=8,14\)
\(x=8,14:2,5\)
\(x=3,256\)
\(x:1,2+2,15=7,28\)
\(x:1,2=7,28-2,15\)
\(x:1,2=5,13\)
\(x=5,13\times1,2\)
\(x=6,156\)