Question

7x +2y = 24 8x+2y= 30 What is x and y

Answer 1

Answer:

x = 6

y = -9

Step-by-step explanation:

we have:

7x +2y = 24    equation 1

8x+2y= 30     equation 2

using equation 2 we have:

8x = 30 -2y

x=$\frac{30-2y}{8}$  equation 3

using equation 3 in equation 1 we have:

7($\frac{30-2y}{8}$)+2y = 24

$\frac{210}{8} - \frac{14y}{8} +2y =24\\\\\frac{1}{4}y = -\frac{18}{8} \\\\y=-\frac{18}{8} * 4\\\\y=-9$

so we have:

x=$\frac{30-2(-9)}{8}$

x=$\frac{30+18}{8}$

x=6

Answer 2

For 7x +2y = 24, the answer for x is $\frac{-2}{7}y+\frac{24}{7}$ and y is $\frac{-7}{2}+12x$

Solve: (x)Let's solve for x.

7x+2y=24

Step 1: Add -2y to both sides.

7x+2y+−2y=24+−2y

7x=−2y+24

Step 2: Divide both sides by 7.

7x/7=-2y+24/7

(y) Let's solve for y.

7x+2y=24

Step 1: Add -7x to both sides.

7x+2y+−7x=24+−7x

2y=−7x+24

Step 2: Divide both sides by 2.

2y/2=-7x+12/2

For 8x+2y= 30, the answer for x is$x=\frac{-1}{4}y+\frac{15}{4}$ and y is $y=-4x+15$

Solve:(x)Let's solve for x.

8x+2y=30

Step 1: Add -2y to both sides.

8x+2y+−2y=30+−2y

8x=−2y+30

Step 2: Divide both sides by 8.

8x/8=-2y+30/8

(y)Let's solve for y.

8x+2y=30

Step 1: Add -8x to both sides.

8x+2y+−8x=30+−8x

2y=−8x+30

Step 2: Divide both sides by 2.

2y/2=-8x+30/2