a)X x 62 + X x 38 = 4200 b) X x 186 - X x 86 = 3400
X x 62 + 38 =4200 X x 186 - 86 = 3400
X x 100 = 4200 X x 100 = 3400
X = 4200 : 100 X = 3400 : 100
X = 42 X = 34
c)X x 623 - X x 123 = 1000
X x 623 - 123 = 1000
X x 500 = 1000
X = 1000 : 500
X = 2
a, X x 62 + X x 48 = 4200 b, X x 186 - X x 86 = 3400
c, 216 : X + 34 : X = 10 d, 2125 : X - 125 : X = 100
a, X x 62 + X x 48 = 4200 b, X x 186 - X x 86 = 3400
c, 216 : X + 34 : X = 10 d, 2125 : X - 125 : X = 100
tim x:
a, X x 186 - X x 86 = 3400 b, X x 75 + 57 x X = 32604
c, 216 : X + 34 : X = 10 d, 2125 : X - 125 : X = 100
a, X x 186 - X x 86 = 3400 b, X x 75 + 57 x X = 32604
c, 216 : X + 34 : X = 10 d, 2125 : X - 125 : X = 100
a) 1400 : 20 – ( 17 + x) = 20
b) 8 × ( x + 15 ) = 640
c. x x 62 + x x 38 = 4200
d. x x 186 - x x 86 = 3400 giúp mk với ạ
Tính giá trị của X
(X : 10) + 37 = 60
25 x X – 15 x X = 72
138 – ( X x5) = 38
(X x 9) : 52 = 18
52 x X + 48 x X = 100
623 x X – 123 x X = 1000
X x 16 + 84 x X = 700
236 x X – X x 36 = 2000
216 : X + 34 : X = 10
2125 : X – 125 : X = 100
Tính giá trị của X
(X : 10) + 37 = 60
25 x X – 15 x X = 72
138 – ( X x5) = 38
(X x 9) : 52 = 18
52 x X + 48 x X = 100
623 x X – 123 x X = 1000
X x 16 + 84 x X = 700
236 x X – X x 36 = 2000
216 : X + 34 : X = 10
2125 : X – 125 : X = 100
Tìm y biết:
a) y x 4 + y x 6 = 240
b) y x 22 + y x 78 = 4200
c) y x 6 – y x 2 = 2844
d) y x 286 – y x 186 = 21900
e) 166 : y + 34 : y =10
g) 2125 : y – 125 : y = 80
h) (y + 5) x 2020 = (200 + 5) x 2020
i) y - 45600 = (2019 - 419) x 4 x 25
Tìm y biết:
a) y x 4 + y x 6 = 240
b) y x 22 + y x 78 = 4200
c) y x 6 – y x 2 = 2844
d) y x 286 – y x 186 = 21900
e) 166 : y + 34 : y =10
g) 2125 : y – 125 : y = 80
h) (y + 5) x 2020 = (200 + 5) x 2020
i) y - 45600 = (2019 - 419) x 4 x 25
