algebra Isaiah 2.0

simplifying expressions

100

5mn-n(6m-2m)

1mn

200

-2x+6x

4x

300

4x²+3x(-9x+6)

-23X+18

400

2(3+x)+x(1-4x)+5

1x+11

500

4ab+5ab-6a

9ab-6a

fractions

100

11 1/3 - 6 11/2

-1/6

200

1/2 x 7/15

7/30

300

5 3/5 + 8 4/5

72/5 or 14 2/5

400

2/5x -15=5/8-16

x=5 5/9

500

4 1/4 x 6

51/2

decimals

100

15.43x 10

154.3

200

79.0-5.2

73.8

300

3.74 / 2

1.87

400

Adelina has read a 128.5-page book in 4.5 days. if she wants to pace herself to finish on time how many pages she needs to read each da to finish the book in 4.5 days

Adelina has to read 28.6 pages each day to finish on time

500

Diana worked to earn $ 48.00. Christopher worked for $10.00 hour. if she earns $6.00 per hour, how many hours did Diana work?

$48.00/6.00= 8 hours

solving equations

100

7x+68x

75x

200

2(x+5)=16

x=3

300

16-2t=5t+9

t=1 or -7=-7

400

5/4x+1/2=2x-1/2

x=-4/3

500

8x-3x+4=14

x=2

proprties

100

a+b=b+a2+6=6+2

ab=ba4x2=2x4

what propertie is this?

Commutative

200

(a+b)+c=a+(b+c)(1+6)+3=1+(6+3

(ab)c=a(bc)(4x2)x5=4x(2x5)

what propertie is this?

Associative

300

5x0=0

wat is this property?

Multiplying by zero

400

ax(b+c=ab+ac

wat property is this?

Distributive

500

(1+6)+3=1+(6+3)

Wat property is this?

Associative