X+100=400-200
X+100=200
X=200-100
X=100
x + 100 = 400 - 200
x + 100 = 200
x = 200 - 100
x = 100
k mik nha
x+100=400-200
x+100=200
x=200-100
x=100
x + 100 = 400 - 200
x + 100 = 200
x = 200 - 100
x = 100
X+100=400-200
X+100=200
X=200-100
X=100
x + 100 = 400 - 200
x + 100 = 200
x = 200 - 100
x = 100
k mik nha
x+100=400-200
x+100=200
x=200-100
x=100
x + 100 = 400 - 200
x + 100 = 200
x = 200 - 100
x = 100
500 + x = 100 + 500
300 - x = 300 + 200
400 - x = 200 + 400
tính nhanh :
100 x 200 + 200 x 500 + 200 x 400
100 x 3 + 400 . . . 100 +200 + 100 x 4
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 = ......
x + 200 = 400 + 100
x + 100 = 200 + 400
Tìm x :
x + 100 = 400 - 200
x + 100 =500
200 + x = 400
100 + 100 + 200 + 200 + 300 + 300 + 400 + 400