Question

Bài 3: Tìm x

a) x – 45,67 = 1,2 x 3,4

b) x x 5 = 656

c) 90,889 – x = 113 – 27,67

d) x : 0,17 = 82,12

e) 1088 : x = 8

Answer 1

x – 45,67 = 1,2 x 3,4

x-45,67=4,08

x=4,08+45,67

x=49,75

Answer 2

a) x – 45,67 = 1,2 x 3,4

 x – 45,67 = 4,08

x = 45,67 + 4,08

x = 49,75

b) x x 5 = 656

X = 656 : 5

X = 131,2

c) 90,889 – x = 113 – 27,67

90,889 – x = 85,33

X = 90,889 – 85,33

X = 5,559

d) x : 0,17 = 82,12

X = 82,12 x 0,17

X = 13,9604

e) 1088 : x = 8

x =  1088 : 8

x = 136

Answer 3

\(a\)) \(x-45,67=1,2\times3,4\\ x-45,67=4,08\\ x=4,08+45,67\\ x=49,75\)

\(b\)) \(x\times5=656\\ x=656:5\\ x=131,2\)

\(c\)) \(90,889-x=112-27,67\\ 90,889-x=84,33\\ x=90,889-84,33\\ x=6,559\)

\(d\))\(x:0,17=82,12\\ x=82,12\times0,17\\ x=13,9604\)

\(e\)) \(1088:x=8\\ x=1088:8\\ x=136\)