I need help 2x+y=7 to solve for y

X=7-y over 2

Step-by-step explanation:

Subtract yy from both sides.

2x=7-y2x=7−y

2 Divide both sides by 22.

x=\frac{7-y}{2}x=

2

7−y

y=-2x+7

Step-by-step explanation:

Add -2x to both sides

2x+y+(−2x)=7+(-2x)

y=-2x+7

i think it would be 42cm

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.