Question

tìm x : a) x x 6 + x : 0,25 = 27,9 b) 32,9 : x + 3,16 = 12,56

Answer 1

\(a.x\times6+x:0,25=27,9\)

\(x\times6+x\times4=27,9\)

\(x\times\left(6+4\right)=27,9\)

\(x\times10=27,9\)

\(x=27,9:10\)

\(x=2,79\)

 

b. \(32,9:x+3,16=12,56\)

\(32,9:x=12,56-3,16\)

\(32,9:x=9,4\)

\(x=32,9:9,4\)

\(x=3,5\)