\(x\cdot1,5-5,61=6,45\)
\(x\cdot1,5=12,06\)
\(x=8,04\)
\(89:x+51,5:x=62,5\)
\(\left(89+51,5\right):x=62,5\)
\(140,5:x=62,5\)
\(x=2,248\)
\(748:\left(x-31,72\right)=13,6\)
\(x-31,72=55\)
\(x=86,72\)
a) X x 1,5 - 5,61 = 6,45 b) 89 : X + 51,5 : X = 62,5 c) 748 : (X - 31,72) = 13,6
X x 1,5 = 6,45 + 5,61 (89 + 51,5) : X = 62,5 X - 31,72 = 748 : 13,6
X x 1,5 = 12,06 140,5 : X = 62,5 X - 31,72 = 55
X = 12,06 : 1,5 X = 140,5 : 62,5 X = 55 + 31,72
X = 8,04 X = 2,248 X = 86,72
Vậy X = 8,04 Vậy X = 2,248 Vậy X = 86,72
CHÚC BẠN HỌC TỐT
a.
\(x\times1,5-5,61=6,45\)
\(x\times1,5=6,45+5,61\)
\(x\times1,5=12,06\)
\(x=12,06\div1,5\)
\(x=8,04\)
b. \(89\div x+51,5\div x=62,5\)
\(\left(89+51,5\right)\div x=62,5\)
\(140,5\div x=62,5\)
\(x=140,5\div62,5\)
\(x=2,248\)
c. \(748\div\left(x-31,72\right)=13,6\)
\(x-31,72=748\div13,6\)
\(x-31,72=55\)
\(x=55+31,72\)
\(x=86,72\)
HOK TỐT
a) X x 1,5 = 6,45 + 5,61 ; b) => ( 89 + 51,5 ) : X = 62,5 ; c) X - 31,72 = 748 : 13,6
X x 1,5 = 12,06 => 140,5 : X = 62,5 X - 31,72 = 55
X = 12,06 : 1,5 X = 140,5 : 62,5 X = 55 + 31,72
X = 8,04 X = 2,248 X = 86,72
