Câu 1:30.45+55.30–30.305√2.2√2–1+13515+(-3)+|-111+(-10)|-3|15–{200:[ 30+( 16+2√15 : 2√12 )]}Câu 2:x –20= -36( 5x – 25 ) : 4 + 75 = 125| x – 4 | = 9( 3x – 17 ) . 16 = 645x –18 = -32 . | x | –5 = 3x – 5 = ( -14 ) + 8| 2x – 7 | – | -3/2 | = 7Câu 3:21 . 16 + 21 . 59 + 21 . 3580 – ( 4 . 25 – 3 . 8 ) ( -12 ) + 83 + ( -48 ) + 17| ( -12 ) + ( -7 ) | . 2 – 30 8 . ( -7 ) + ( +3 ) . 8| -5 | + | 16 | + | 5...
Đọc tiếp
Câu 1:
30.45+55.30–30.30
5√2.2√2–1+135
15+(-3)+|-111+(-10)|-3|
15–{200:[ 30+( 16+2√15 : 2√12 )]}
Câu 2:
x –20= -36
( 5x – 25 ) : 4 + 75 = 125
| x – 4 | = 9
( 3x – 17 ) . 16 = 64
5x –18 = -3
2 . | x | –5 = 3
x – 5 = ( -14 ) + 8
| 2x – 7 | – | -3/2 | = 7
Câu 3:
21 . 16 + 21 . 59 + 21 . 35
80 – ( 4 . 25 – 3 . 8 )
( -12 ) + 83 + ( -48 ) + 17
| ( -12 ) + ( -7 ) | . 2 – 30
8 . ( -7 ) + ( +3 ) . 8
| -5 | + | 16 | + | 5 |
