Tell whether the equation is true, false, or open.
77 + (-9) = 86
Part 1
Classify the equation. Choose the correct answer below.
true, false, or open?
The equation is true.
Determine if the given value is a solution to the equation.
7x - 2 = 10; x = 1
Is x = 1 a solution of the equation 7x - 2 = 10?
Yes or No?
Yes
Determine if the given value is a solution to the equation.
-6b + 2 = 5; 1/3
Is b = 1/3 a solution of the equation -6b + 2 = 5
No
An athlete trains for 85 min each day for as many days as possible. Write an equation that relates the number of days d that the athlete spends training when the athlete trains for 425 min.
Enter an equation where any numbers represent numbers of minutes.
[ ]
(Type an equation using d as the variable. Do not simplify. Do not evaluate.)
The equation is:
d * 85 = 425
Use mental math to find the solution of the equation.
16 + d = 24
d = [ ]
d = 8
Use a table to find the solution of the equation.
8a - 15 = 17
a = [ ]