1)11x+8x=456 2)38x-14x=1608 3)y+27y=1204

1)11x+8x=456;

19x=456;

x=456:19;

x=24

2)38x-14x=1608;

24x=1608;

x=1608:24;

x=67

3)y+27y=1204;

28y=1204;

y=1204:28;

y=43

1) (11+8)x=456
19x=456
x=456/19
x==24
2) (38-14)x=1608
24x=1608
x=1608/24
x==67
3)
(1+27)y=1204
28y=1204
y=1204/28
y=43