A) 71 – (33 + X) = 26 B) (X + 73) – 26 = 76 C) 2(X- 51) = 2.23 + 20...
Bài 2: Tìm x:
a) 71 – (33 + x) = 26 b) (x + 73) – 26 = 76 c) 2(x- 51) = 2.2
3
+ 20
d) 450 : (x – 19) = 50 e) 4(x – 3) = 7
2
– 1
10
f) 2x – 49 = 5.3
2
g) 200 – (2x + 6) = 4
3
h) 135 – 5(x + 4) = 35 i) 3
2
(x + 4) – 5
2
= 5.2
2