+
- 5 + 10
5
2 - 10
-8
2 x (-10)
- 20
10x = 20
X = 2
- 10 + 10 + 15
15
5 - 15 - 5
-15
5 x (-5) x (-1)
25
- 15 + 10x = 25
X = 4
5 + 2( 4 + 2 )
42
2 - 5( 6 - 2 )
2( - 5 x 3 )
-30
2( -5x + 10 ) = 40
X = -2
- 5 + 10 + 2( 3 + 2 + 6)
77
5 - 10 - 2( 4 - 2 - 10 )
56
4 x - 4( 5 x - 2 x 1 )
160
2/4 ( 5x - 20 + 10 ) = 20
X = 10
3(2 + 2) + 2(3 + 4)
26
- 10 - 20( - 1 + 1 )
-30
- 7 x - 1 x 2 ( 5 x - 5 ) + ( 2 x - 2 )
346
X = -2