A
3x+5+2x−7
5x -2
4a−2+7a+8
11a+6
6y−3y+12−4
3y+8
9m+5−2m−11
7m-6
8p−4+3p+10−2
11p+4
Evaluate 3x+73x+7 when x=4x=4.
19
Evaluate 5a−2b5a−2b when a=6a=6 and b=3b=3.
24
Evaluate 2n+92n+9 when n=11n=11.
31
Evaluate 4m−64m−6 when m=8m=8.
26
Evaluate 7x+2y7x+2y when x=3x=3 and y=5y=5.
31
Solve:
x+9=21x+9=21
x=12
Solve:
3x=273x=27
x=9
Solve:
2x+5=192x+5=19
x=7
Solve:
5y−7=185y−7=18
y=5
Solve:
4n+9=334n+9=33
n=6
Maya bought 3 hoodies and 2 hats. Each hoodie cost the same amount, and each hat cost $15. She spent $126 total.
Write and solve an equation to find the cost of one hoodie.
3x+30=126
x=32x
Therefore, the cost of one hoodie is $32
A school ordered 18 packs of markers. Each pack contained the same number of markers. After giving away 24 markers, the school had 192 markers left. How many markers were in each pack?
18x−24=192
x=12
Therefore, there were 12 markers in each pack
A water tank contained 350 litres. Water drained out at a rate of 25 litres per hour for 6 hours. How much water remained?
350−25(6)=200
Therefore 200 L of water remained
A bookstore sold 8 novels for the same price and one magazine for $6. The total sale was $94. What was the price of each novel?
8x+6=94
x=11
Therefore, the price of each novel was $11
A basketball team scored 18 points in the first quarter. In each of the next three quarters, they scored the same number of points. If they scored 78 points total, how many points did they score in each of the last three quarters?
18+3x=78
x=20
Therefore, they scored 20 points in each of the last three quarters.
Mia has x stickers. She buys 15 more stickers and now has 42 stickers.
a) What equation represents this situation
b) How many stickers did she start with?
a) Equation: x+15=42
b) x=27
Therefore, he started with 27 stickers
Ethan earned $8 per hour babysitting. If he earned $56 total, how many hours did he work? Write an equation, then solve.
Equation: 8h=56
h=7
Therefore, he worked 7 hours
Sarah is 5 years older than her brother. Sarah is 17 years old. Write and solve an equation to find her brother’s age.
Equation: x+5=17
x=12
Therefore, the brother is 12 years old.
Jordan has x hockey cards. His friend gives him 18 more cards, and now he has 45 cards. Write and solve an equation to find how many cards Jordan started with.
x+18=45
x=27
Therefore, Jordan started with 27 Cards
A cell phone company charges a $35 monthly fee plus $12 for every gigabyte of data used. If the monthly bill was $95, how many gigabytes were used?
35+12x=95
x=5
Therefore, 5 gigabytes were used