9x + y = 9 3x + 3y = -12

x = 13/8

y = -45/8

Step-by-step explanation:

9x + y = 9

3x + 3y = -12

Divide the second equation by 3

x+y = -4

Multiply this by -1

-x -y = 4

Add this to the first equation to eliminate y

9x + y = 9

-x -y = 4

8x +0 = 13

Divide by 8

8x/8 = 13/8

x = 13/8

Now find y

x+y = -4

13/8 +y = -4

Subtract 13/8 from each side

13/8 -13/8 +y = -4-13/8

y = -32/8 - 13/8

y = -45/8

step-by-step explanation:

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1