Addition +
x+7=12
x= 5
x−5=10
x=15
2x=10
x=5
x / 2=8
x= 16
Explain the 'Golden Rule' of equations. If I add 10 to the left side, what must I do to the right side?
Add 10 to the right side
y+15=30
y=15
y−14=21
35
5y=45
y= 9
y/4 = 6
y=24
Name the inverse operation for all four: +, −, ×, ÷.
subtraction , addition , division, multiplication
24=w+9
w=15
13=k−7
k=20
12g=60
y = 5
m / 3 =12
m = 36
I think x=5 for the equation x+10=15. Am I correct? Solve it
Yes, x= 5
x+55=110
x=55
w−32=48
w= 80
7w=84
w = 12
r / 5 = 15
r = 3
What is the variable in this equation ? 27 = 11 + x
x = 16
z+215=500
z= 285
z−88=112
z= 24
15n=75
n = 5
11 = z / 6
z = 66
"What is the inverse operation of addition? What is the inverse of division?"
Subtraction , and Multiplication