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4 votes
Solve
[y=3+x
y = 3x + 8

2 Answers

4 votes

Hello !

1. We have :


y=3+x\\y = 3x + 8

2. We know that y = y


\boxed{y=}3+x\\\boxed{y=} 3x + 8

We know that y = y, so :


3 + x = 3x + 8

3. Solve the equation

3.1 Solve x


\\\\\\\\3+x = 3x + 8\\\\3 + x - x = 3x + 8 -x\\\\3 = 2x + 8\\\\3 - 8 = 2x + 8 - 8\\\\-5=2x\\\\x = -(5)/(2)\\\\\boxed{x = -2,5}

3.2 Solve y


y = 3 + x\\\\y = 3 + (-2,5)\\\\y = 3 - 2,5\\\\\boxed{y = 0,5}

4. Conclusion

x = -2,5

y = 0,5

User Bivoauc
by
8.7k points
6 votes
To solve the system of equations:
y=3+x
y=3x+8
4:38 AM
We can set the two equations equal to each other and solve for x:
3+x = 3x+8
2x = -5
× = -5/2
Now that we have x, we can substitute it into either equation to solve for y:
y = 3 + (-5/2)
y = 1/2
Therefore, the solution to the system of
equations is x = -5/2 and y = 1/2.
User Wernsey
by
7.8k points

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