Question

a> X x1,25 + 5,61 = 6,48

b> X : 15,91 x 17,8 = 76,362

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Answer 1

a) \(X.1,25+5,61=6,48\)

\(x.1,25=6,48+5,61\)

\(x.1,25=12,09\)

\(x=12,09:1,25\)

\(x=9,672\)

b) \(x:15,91.17,8=76,362\)

\(x:15,91=76,362:17,8\)

\(x:15,91=4,29\)

\(x=4,29.15,91\)

\(x=65,2509\)

Dấu chấm là dấu nhân

Answer 2

a, X x 1,25 + 5,61 = 6,48

X x 1,25 = 6,48 - 5,61

X x 1,25 = 0,87

            X = 0,87 : 1,25 

             X = 0,696

b, X : 15,91 x 17,8 = 76,362

X : 15,91 = 76,362 : 17,8 

X : 15,91 = 4,29

             X = 4,29 x 15,91

              X = 68,2539

Answer 3

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