What does x - 3y = -15 equal

y=1/3x+5

Step-by-step explanation:

I believe this question is turn in to slope-intercept form. If it's not, please let me know. So slope-intercept form is y=mx+b and on the question, they use standard form. Standard form is Ax+Bx=C. To turn standard form into slope-intercept form, you simply make you're y value alone on one side. So you're going to move x to other side my subtracting x on both sides. -3y=-x-15. Right now, we are almost done. We just have to make y own their self which means that y must me one. To make it as one, you will divide -3 on both sides. y=1/3x+5. Make sure in this step, you have to look very careful with negative numbers. If you multiply or divide negative number to negative number, it turns in the positive. So x-3y=-15 is equal to y=1/3x+5.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.