2,1x3,75=X x ( 0,05+3,7)
7,875= X x 3,75
x = 7,875 : 3,75
x = 2,1
~~ học tốt ~~
2,1 x 3,75 = X x 3,75
7, 875 = X x 3,75
X = 7,875 : 3,75
X = 2,1
2,1*3,75=x*(0,05 + 3,7) = 7,875=x* 3,75 =7,875:3,75 =2,1
\(2,1\times3,75=x\times\left(0,05+3,7\right)\)
\(x\times\left(0,05+3,7\right)=2,1\times3,75\)
\(x\times3,75=2,1\times3,75\)
\(x=2,1\times3,75\div3,75\)
\(x=2,1\)