Inverse Operations
What is the inverse operation for addition?
Subtraction
Solve for y :
8x + y = 5
y = 8x + 5
Solve for x :
x - b = 16
x = b + 16
Solve for a:
a - c = d - r
a = d - r + c
What is the inverse operation of Multiplication?
Division
Solve for y :
3x + 5y = 30
y = 3/5x + 6
Solve for x :
c - x = 5
x = c - 5
Solve for a
am = n+p
a=(n+p)/m
What is the inverse operation of subtraction?
Addition
Solve for y :
-2x - y = 4
y = -2x - 4
Solve for x :
7x - 6b = 24
x= 6b + 24
7
Solve for v:
2v-4m=6
v=2m+3
What is the inverse operation for division?
Multiplication
Solve for y
2(5x + y) = 3
y = 5x + 3/2
8x + 4 - 5x = b
x = b - 4
3
Solve for a:
u=(ak)/b
(ub)/k=a
When do we use inverse operations?
Options:
- To cancel out a term
- To isolate the variable (get letter by itself)
Solve for y :
y/3 + 15x = 4
y = -5x + 4/3
Solve for x :
(3x+4b)/3=24
x=(72-4b)/3
Solve for p:
r(p+w)=n
p=n/r-w