3.1
3.2
3.3
3.4
3.5 and 3.6
100
6(n-9)
6n+-54 OR 6n-54
100
10x+z+y+2x+x+2z-2y
13x+3z+-1y or 13x+3z-1y
100
p+9=-31
p=-40
100
8p=-40
p=-5
100
7p+19=33
p=2
200
10(o-12)
10o+-120 or 10o-120
200
3u+3v+11w+1y+1zu+v+w+x+y+z+2u+2v+10w
3u+3v+11w+1y+1z
200
p-10=17
p=27
200
n/8=9
n=72
200
Nicole wants to buy a tablet that costs $300 no tax. She has saved $50. She plans to save $25 a week. How many weeks does it take her to save enough? Write and solve the problem. Let w = weeks
Problem- 50+25w=300 Answer- w=10
300
11(12-p)
132+-11p or 132-11p
300
30z+1u+1i
2z+8z+u+i+20z
300
-90=30+p
-120=p
300
9m=-81
m=-9
300
8p-18=54
p=9
400
12(12+q)
144+12q
400
25+15o+18p
15+16o+19p+10+18f-o-p
400
-100=p-19
-119=p
400
p/10=100
p=10
400
Ninety-one is nine less than ten times a number
Problem- 91=10n-9 Answer- n=10
500
13(11-r)
143-13r or 143+-13r
500
8p-9u+10p+20u+50p
68p+11u
500
-200=-5+p
-195=p
500
-9p=63
p=-7
500
Dave has 19 more pokemon cards than Roxy. If they have 35 cards, How many pokemon cards do they EACH have?
Problem- 19+2e=35 answer- e= 8