Răspuns :
(a+81:9)×5=295
a+81:9=295:5
a+9=59
a=59-9
a=50
(b×4+20):2=54
b×4+20=54×2
b×4+20=108
b×4=108-20
b×4=88
b=88:4
b=22
a+81:9=295:5
a+9=59
a=59-9
a=50
(b×4+20):2=54
b×4+20=54×2
b×4+20=108
b×4=108-20
b×4=88
b=88:4
b=22
(a+81:9)*5=295
a + 9 = 295:5
a + 9 = 59
a = 59-9
a = 50
(b*4+20):2=54
b×4+20 = 54×2
b×4+20 = 108
b×4 = 108-20
b×4 = 88
b = 88 : 4
b = 22
a + 9 = 295:5
a + 9 = 59
a = 59-9
a = 50
(b*4+20):2=54
b×4+20 = 54×2
b×4+20 = 108
b×4 = 108-20
b×4 = 88
b = 88 : 4
b = 22