X+6=19
X-7Y=-7
I cant remeber how to do this but think i need to find a common denominator?
No, 'common denominator' is what you do when adding fractions. This is algebra.
Are you sure the first equation isn't
x + 6Y = 19?
What you have written as the first equation could be simplified to x = 13.
You could use that and the second equation to solve for y
sorry yes the question should read
x+6y=19
x-7y=-7
pls help
I thought so.
Subtract the second equation from the first. That gives you
13y = 26. Take it from there.
Divide both sides by 13 to get y, and then use y to get x, using either of the first two equations.
To solve these two equations, you don't need to find a common denominator. Let's solve them step by step:
Equation 1: X + 6 = 19
To isolate the variable X, you need to get rid of the 6 on the left side. You can do this by subtracting 6 from both sides of the equation:
X + 6 - 6 = 19 - 6
This simplifies to:
X = 13
So the solution to Equation 1 is X = 13.
Now, let's move on to the second equation:
Equation 2: X - 7Y = -7
To solve for X, we need to isolate it on one side of the equation. To do this, we'll use the method of substitution.
Let's solve Equation 1 for X:
X = 13
Now substitute this value for X in Equation 2:
13 - 7Y = -7
From here, you can solve for Y. First, let's get rid of the constant term by adding 7 to both sides of the equation:
13 - 7Y + 7 = -7 + 7
This simplifies to:
13 - 7Y = 0
Next, isolate the variable term by subtracting 13 from both sides:
13 - 7Y - 13 = 0 - 13
Simplifying further, we have:
-7Y = -13
Finally, divide both sides of the equation by -7 to solve for Y:
-7Y / -7 = -13 / -7
This simplifies to:
Y = 13/7 or Y = 1.857
Therefore, the solution to the system of equations is X = 13 and Y = 1.857.