Solving Equations
Solve and check:
7x - 4x + 21 = 15
x=-2
Which of the following equations has no solution?
A.-6x+5=0
B. 4x-9=4x+12
c.-8x+1=-8x+1
D.3x-5=7x
B.
Joey is picking apples at a rate of 20 apples per hour
3 hours later, his sister, Kat, joins, and she picks at a
rate of 25 apples per hour.
1. Let x be the number of hours since Joey started
picking apples. In terms of x, how many hours has
Kat been picking apples?
a. x
b. x+3
c. x - 3
d. 3x
c.
What is the difference between
-62 and (-6)2
The difference is that
Solve:
|x|=9
x=-9 or x=9
Solve and check:
7(2-k)= 3(k+8)
k=-1
Solve and Check
5.3-4.8x=1.3x-52.7
x=9.5
Joey is picking apples at a rate of 20 apples per hour.
3 hours later, his sister, Kat, joins, and she picks at a
rate of 25 apples per hour.
2. Write an expression for the number of apples Joey
has picked.
a. 20x
b. 25x
c. 20x -3
d. 20(x-3)
A.
Simplify using order of operations:
30÷3(5)
-----------------6-(-1)
-2
Solve
|3x-10|=11
x=7 or x=-1/3
Solve and Check:
4(c+3)-(c-1)=64
c=17
Solve For Y
10x-5y=20
y=2x-4
Joey is picking apples at a rate of 20 apples per
hour. 3 hours later, his sister, Kat, joins, and she
picks at a rate of 25 apples per hour.
3. Write an expression for the number of apples
Kat has picked.
a. 25x - 3
b. 25(x-3)
c. 25x
d. 20(x-3)
B.
Evaluate the expression if y = -4:
10y- y2
24
Solve
|7x-15|=30
x=45/7 or x=-15/7
Solve and Check:
20-3p=4(-p+3)
p=-8
Solve and Check:
5.9-1.7y=3(4.1-y)
y=4.92
Joey is picking apples at a rate of 20 apples per hour. 3 hours later, his sister, Kat, joins, and she picks at a rate of 25 apples per hour.
4. Write an equation that Joey and Kat have picked the same number of apples. How long has Joey been picking when they have picked the same number of apples?
20x=25(x-3)
Solve the equation:
10-x=30
x=-20
Solve:
7-|3x|=-29
x=12 or x=-12
Which of the following equations
has all solutions/identity?
a. -6x+5=0
b.4x -9 =4x + 12
C.-8x+1 =- 8x+1
d. 3x -5 = 7x
C.
Solve for X:
2jkx=6j
x=3/k
Factor out the common factor (GCF):
80x3 + 30x2y
10x2(8x+3y)