Question

7x + 2y = 248x + 2y = 30​

Answer 1

Answer:x=3 and y=4

Step-by-step explanation:

Let's solve your system by substitution.

x+y=7;x+2y=11

Step: Solvex+y=7for x:

x+y=7

x+y+−y=7+−y(Add -y to both sides)

x=−y+7

Step: Substitute−y+7forxinx+2y=11:

x+2y=11

−y+7+2y=11

y+7=11(Simplify both sides of the equation)

y+7+−7=11+−7(Add -7 to both sides)

y=4

Step: Substitute4foryinx=−y+7:

x=−y+7

x=−4+7

x=3(Simplify both sides of the equation)

Answer 2

(8x + 2y) - (7x + 2y) = 30 - 24

X = 6