x(25:5)=350
5x=350
x=350:5
x=70
r+120:4=150
r+30=150
r=150-30
r=120
(40*3):x=6
120:x=6
x=120:6
x=20
25:5x=450
5x=450
x=450:5
x=90
x(25:5)=350
5x=350
x=350:5
x=70
r+120:4=150
r+30=150
r=150-30
r=120
(40*3):x=6
120:x=6
x=120:6
x=20
25:5x=450
5x=450
x=450:5
x=90