x : y = 3 rest 4 ⇒ x = 3 y + 4
x : z = 2 = > z = x / 2 = ( 3 y + 4) / 2
Inlocuiesc in suma data
x + y + z = 358
3 y + 4 + y + ( 3 y + 4) / 2 = 358
4 y + ( 3 y+ 4 ) / 2 = 358 - 4 = 354
8 y + 3 y + 4 = 2 × 354
11 y = 708 - 4 = 704
y = 704 : 11
y = 64
x = 3 × 64 + 4 = 192 + 4 = > x = 196
z = 196 : 2 = > z = 98
( x + 2 y + z : 2 ) × 3 + 56 = 1 175
= ( 196 + 2 × 64 + 98 : 2 ) × 3 + 56 =1 175
= ( 196 + 128 + 49 ) × 3 + 56 =
= 373 × 3 + 56 =
= 1 119 + 56 =
= 1 175