Pre-Algerbra project jeopardy

one step equations

100

solve for x 

x+(-8)=-20

To isolate x, we can do one of two things: subtract -8 or add +8. We prefer adding the opposite.

x + (-8) = -20 

x + (-8) + 8 = -20 + 8 add 8 to each side

 simplify

To check, let's plug -12 in for x.

(-12) + (-8) = -20

-20 = -20

200

solve for y

7 - y = 10

7- (-3) =10

7+3=10

10=10

300

Solve for z:

100/z = -4

100/-25 = -4

-4=-4

400

x+5=-17

x=-22

500

-15=x-3

-12=x

two step equations

100

Solve for x: -3x - 7 = -12

-5 – 7 = -12

-12 = -12

200

Solve for y: 1- 3y = -14

-14=-14

300

Solve for x: x + 5 / 2  =10

10=10

400

-4x -3 = 12

x=-15/4

500

2x +5 = -21

x=-13

distributive property

100

 5(x+6) =

 5x + 30

200

3(2x+1) =

6x +3

300

2(2x-3) =

4x - 6

400

6(x-4) =

  6x - 24

500

 8(2x-3) =

16x - 24

multi step equations

100

 −20 = −4x − 6x

=2

200

6 = 1 − 2n + 5

=0

300

 8x − 2 = −9 + 7x

=-7

400

a + 5 = −5a + 5

=0

500

4m − 4 = 4m

= no solution

combining like terms

100

−6k + 7k

=k

200

 12r − 8 − 12

=12r − 20

300

n − 10 + 9n − 3

=10n − 13

400

−4x − 10x

=-14x

500

 −r − 10r

=−11r