This would be perpendicular
When u add it stays the same but for subtraction u change the sign.
Example: 2- (-5)=7
<span>4/12=3/9=2/6=1/3 </span>should be the right answer. (You have to reduce.)
3b^2 - x = -9b^2
x = 3b^2 +9b^2
x = 12b^2
3b^2 -12b^2 = -9b^2
hope this will help you
Solving by substitution:
y = 4x - 3
2x + 7y = 41
Let us substitute the first equation y = 4x - 3 into the second.
2x + 7y = 41
2x + 7(y = 4x -3) = 41
2x + 7(4x -3) = 41
So that's the third option.
I hope this helps.
