TỠM X, BIẾTA) 71 – (33 + X) = 26G) 140

Bài 1. Tỡm x, biếta) 71 – (33 + x) = 26g) 140 : (x – 8) = 7m) |x – 2| = 0n) |x – 5| = 7 – (–3)h) 3

^x

= 9b) (x + 73) – 26 = 76i) 4

^x

= 64c) 45 – (x + 9) = 6o) |x – 5| = |–7|j) 2

^x

= 162x – 49 = 5.3

²

d) 89 – (73 – x) = 20p) |x| – 5 = 3e) (x + 7) – 25 = 13k) 200 – (2x + 6) = 4

³

q) 15 – 2|x| = 13f) 198 – (x + 4) = 120l) 7x – x = 5

²¹

: 5

¹⁹

+ 3.2

²

- 7

⁰