Substitute and Solve
Intergers
+ & -
Intergers X & Division
One Step Equations + & -
One Step Equations X & Division
100

X + 16

x= 4

substitute and solve

4 +16 = 20

20

100

-7 +3 = ?

-4

100

When the signs are the same in multiplication & division the answer will be:

a. negative   -2  X -3 = -6

b. Doesn't matter

c. positive    -2  X -3 = +6

c. positive    -2  X -3 = +6

100

X - 3 = 10 What do you do to to get rid of the - 3.

a. Do the opposite, subtract 3 on both sides

b. Do the opposite, add 3 on both sides

c. Ask it politely to leave.

b. Do the opposite, add 3 on both sides

X -3 +3  = 10 + 3

x = 13

100

3x = 12 

What do you do to to get rid of the 3?

a. Do the opposite, multiply by 3 on both sides.

b. Do the opposite, divide by 3 on both sides.

c. Ask it to politely leave.

b. Do the opposite, divide by 3 on both sides.

3/3 x = 12/3

x= 4

200

14  -  X 

x = 4

14 - 4 = 10

10

200

-4 + 6 = ?

2

200

5x = 25

5X /5 = 25 /5

X = 5

200

X - 3 = 14

17

200

8X = 24

8X /8 = 24/8

x = 3

300

4N 

N = 5

4 x 5 = 20

20

300

-3 - 1 = ?

-4

300

X/3 = 7 

X/3  x 3 = 7 x 3

X = 21

300

X + 9 = 2

-7

300

X/15 = 2

X/15 x 15 = 15 x 2

X = 30

400

15 - X 

X = 11

15 - 11 = 4

4

400

When you subtract integers the sign in the answer will be:

a. The sign of the smaller number in the problem.

b. The sign of the bigger number in the problem.

c. Sign doesn't matter.

b. The sign of the bigger number in the problem.

400

  4X  =  16

4X/4  = 16/4

X = 4

400

B - 7 = 5

12

400

6X = 36

6X /6 = 36/6

X = 6

500

12/X

X = 4

12/4 = 3

3

500

10  - (-3) =

13

500

X/3  = 4

X/3 x  3 = 4 x 3

X = 12

500

X + 12 = 22

10

500

10X = 230

10X /10 = 230/10

x = 23

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