(X – 8) = 7 A) 71 – (33 + X) = 26 B) (X + 73) – 26 = 76 K) 4(X + 4...

Bài 2: Tỡm x:

j) 140 : (x – 8) = 7

a) 71 – (33 + x) = 26

b) (x + 73) – 26 = 76

k) 4(x + 41) = 400

c) 45 – (x + 9) = 6

l) 11(x – 9) = 77

d) 89 – (73 – x) = 20

m) 5(x – 9) = 350

n) 2x – 49 = 5.3

2

e) (x + 7) – 25 = 13

f) 198 – (x + 4) = 120

o) 200 – (2x + 6) = 4

3

g) 2(x- 51) = 2.2

3

+ 20

p) 135 – 5(x + 4) = 35

q) 25 + 3(x – 8) = 106

h) 450 : (x – 19) = 50

i) 4(x – 3) = 7

2

– 1

10

r) 3

2

(x + 4) – 5

2

= 5.2

2