2x + 3y = 40
+
-2x + 2y = 20
___________ Adding both equations
0x + 5y = 60
____________
5y = 60
y = 60/5 = 12
y = 12.
Since we have gotten y =12, and the only option with that is option D.
So we don't have to solve for x.
<span>The answer is D.</span>
Answer:
(2 - x ) = 1 / 10
Step-by-step explanation:
1 / 5 + 2 / 3 (2 - x ) = 4 / 15
Subtract 1 / 5 from both sides
2 / 3 (2 - x ) = 4 / 15 - 1 / 5
2 / 3 (2 - x ) = 1 / 15
Multiply 3 / 2 on both sides
(2 - x ) = 1 / 15 * 3 / 2
(2 - x ) = 1 / 10