Answer :
a + b = 50
a = 2b - 43
2b - 43 + b = 50
+43 +43
3b = 93
b = 31
(31 x 2) - 43 = 19
a = 19 b = 31
31 + 19 = 50
a = 2b - 43
2b - 43 + b = 50
+43 +43
3b = 93
b = 31
(31 x 2) - 43 = 19
a = 19 b = 31
31 + 19 = 50