▪Răspuns :
1. a + b × 2 = 94 => 2 ( 94 - a )
a = b - 7 => b = b7
b = 65 - 7
b = 58
2 ( 94 - a ) = a - 7
188 - 2a = a - 7
188 + 7 = a + 2a
195 = 3a => a = 195 : 3
a = 65
a /-----/--/+7
b /-----/-----/ = 94 ( in total )
2. 28 + x = 2 ( 2 + x )
28 + x ( 4 + 2x
28 - 4 = 2× - x
24 = x
28 + 24 = 52
