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ankoles [38]
3 years ago
12

Find ySolve the simultaneous equations3x + 2y = 27 3x - Y = 9​

Mathematics
1 answer:
lutik1710 [3]3 years ago
6 0

Answer:

y = 6

Step-by-step explanation:

To find y, we need to eliminate x in this system of equations:

3\cdot x + 2\cdot y = 27 (1)

3\cdot x - y = 9 (2)

From (1) and (2):

x = \frac{27-2\cdot y}{3}

x = \frac{9+y}{3}

Then, we equalize both expressions and solve for y:

\frac{27-2\cdot y}{3} = \frac{9+y}{3}

27-2\cdot y = 9 + y

3\cdot y = 18

y = 6

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3 years ago
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