Literal Equations
Solve for j:
3-m=9-j
j=6+m or j=m+6
Solve for x:
16+4x=4(x+3)+4
Infinitely Many Solutions
Solve for k:
−12 = 3 − 2k − 3k
k=3
On the first 3 math test, Joseph scored 80, 72, and 78. What must he score on the 4th math test in order to have an 80 test average?
90
Solve for x:
y = 5x - 6
x=(y+6)/5
4(x-3)+8=2x
One solution: x=2
Solve for x:
24 = 6(−x − 3)
x=-7
Natalie pays $1.09 each to download songs on her phone plus the $5 subscription fee for the music service. If "s" is the number of songs she downloads, write an equation that represents her total cost (c) in dollars.
Do not solve.
c=1.09s+5
Solve for x:
(x+y)/3=5
x = 15 – y
Solve for n:
−6n − 20 = −2n + 4(1 − 3n)
One Solution: n=3
Solve for k:
−4k + 2(5k − 6) = −3k − 39
k=-3
Jayla is saving to buy a game that costs $75 for her brother. This is $15 more than 3 times what she saved last month. How much did she save last month?
$20
Solve for y:
12x – 4y = 20
y = 3x – 5
4(−8x + 5) = −32x − 26
No solution
Solve for v:
6(6v + 6) − 5 = 1 + 6v
v=-1
Marcy paid a flat fee of $20 per month for her gym membership. She also pays $60 per hour with her trainer at the gym. Last month, she spent $500 total at the gym. How many hours did she spend with per personal trainer?
Write and equation AND solve! Both must be correct.
20+60h=500
h=8