Question

Solve the following simultaneous equation 3a-b=10,2a+4b=0

Answer 1

Yes

Answer 2

multiply first one by 4
12 a - 4 b = 40
2 a + 4 b = 0
================ add
14 a = 40
a = 20/7
b = 3a - 10 = 60/7 - 70/7 = - 10/7