The sum of two numbers is 12 and their difference is 5. Find each of the numbers.

8.5 and 3.5

Step-by-step explanation:

Let the two numbers be a and b

Represent the question in an equation:

a + b = 12 eqn 1

a - b = 5eqn 2

2a = 17 addition of both equations

Divide both sides by 2

a = 17/2

a = 8.5

To find b, Substitute the value of a into equation 2

a - b = 5, where a = 8.5

8.5 - b = 5

Make b the subject

-b = 5 - 8.5

-b = -3.5, divide both sides by -1

b = 3.5

Check with reference to the question:

8.5 + 3.5 = 12

8.5 - 3.5 = 5

I hope this is clear, please mark as brainliest answer.

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

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant