x + 100 =500
x = 500 - 100
x = 400
200 + x = 400
x = 400 - 200
x = 200
ai k mk mk k lại ^_^
x+100=500
x=500-100
x=400
200+x=400
x=400-200
x=200
x + 100 = 500
x = 500 - 100
x = 400
200 + x = 400
x = 400 - 200
x = 200
x + 100 =500
x = 500 - 100
x = 400
200 + x = 400
x = 400 - 200
x = 200
ai k mk mk k lại ^_^
x+100=500
x=500-100
x=400
200+x=400
x=400-200
x=200
x + 100 = 500
x = 500 - 100
x = 400
200 + x = 400
x = 400 - 200
x = 200
tìm x biết
x+ 100 = 100 + 100 x 2 + 400
100 x 3 + 400 . . . 100 +200 + 100 x 4
500 + x = 100 + 500
300 - x = 300 + 200
400 - x = 200 + 400
b) 200 x 4 = ...... 300 x 2 = ......
200 x 2 = ...... 300 x 3 = ......
400 x 2 = ...... 500 x 1 = ......
100 x 4 = ...... 100 x 3 = ......
Tìm x :
x + 100 = 400 x 2
Tìm x :
x + 400 = 600 - 100
Tìm x :
x + 100 = 400 - 200
x + 400 = 500 - 100
x + 10 = 50
tính nhanh :
100 x 200 + 200 x 500 + 200 x 400