Answer:
a = 3/2, b = 2.
Step-by-step explanation:
2a + 2b = 7
4a + 3b = 12
If we multiply the first equation by 2 we get
4a + 4b = 14
Subtracting this from second equation:
-b = -2
b = 2.
Substitute b = 2 in the first equation
2a + 2(2) = 7
2a = 3
a = 3/2.
