Răspuns :
(2x+3)*4=36
2X+3=46/4
2x+3=9
2x=9-3
2x=6
x=6/2
x=3
(20-y)/4+6=10
(20-y)/4=10-6
(20-y)/4=4
20-y=4*4
20-y=16
-y=16-20
-y=-4
y=4
2*3+3*4=6+12=18
(2x+3)*4=36
2X+3=46/4
2x+3=9
2x=9-3
2x=6
x=6/2
x=3
(20-y)/4+6=10
(20-y)/4=10-6
(20-y)/4=4
20-y=4*4
20-y=16
-y=16-20
-y=-4
y=4
2*3+3*4=6+12=18