How do you solve 3= 9 =6y
x 2x+5 20
To solve the equation 3/9 = 6y/x, and 2x + 5 = 20, you need to approach it step by step. Let's start with the first equation:
3/9 = 6y/x
To isolate the variable, you can cross-multiply:
3x = 9 * 6y
Now you can simplify further:
3x = 54y
To solve for y, divide both sides of the equation by 54:
y = (3x) / 54
Simplifying even more:
y = x / 18
Now let's move to the second equation:
2x + 5 = 20
To solve for x, first subtract 5 from both sides:
2x = 20 - 5
2x = 15
Next, divide both sides of the equation by 2 to isolate x:
x = 15 / 2
x = 7.5
Now you have the value of x, which you can substitute back into the expression for y:
y = (7.5) / 18
y = 0.4167 (rounded to 4 decimal places)
Therefore, the solution to the system of equations is x = 7.5 and y = 0.4167.