2x + y = -2
x + y = 5

x= -7, y= 12

Step-by-step explanation:

To find the value of x and y, first label the 2 equations.

2x +y= -2 (1)

x +y= 5 (2)

(1) -(2):

2x +y -(x +y)= -2 -5

2x +y -x -y= -7 (expand bracket)

x= -7

subst. x= -7 into (2):

-7 +y= 5

y= 5 +7 (+7 on both sides)

y= 12

37/3

step-by-step explanation:

step 1: simplify both sides of the equation.

7x+8(x+

1

4

)=3(6x−9)−8

7x+(8)(x)+(8)(

1

4

)=(3)(6x)+(3)(−9)+−8(distribute)

7x+8x+2=18x+−27+−8

(7x+8x)+(2)=(18x)+(−27+−8)(combine like terms)

15x+2=18x+−35

15x+2=18x−35

tep 2: subtract 18x from both sides.

15x+2−18x=18x−35−18x

−3x+2=−35

step 3: subtract 2 from both sides.

−3x+2−2=−35−2

−3x=−37

step 4: divide both sides by -3.

−3x

−3

=

−37

−3

x=

37

3