What is for all real numbers a and b, a - b = a + -b
100
Solve 14x - 21 = -133
What is x = -8
100
Simplify -(2k + 14)
What is -2k - 14
100
Two angles whose sum is 180 degrees
What is supplementary angles
100
Solve 13x - 3(2 + 4x) = 25
What is x = 31
200
Simplify -10 - (-y).
What is y + -10 or y - 10.
200
Solve -9A - 1 = 0
What is A = -1/9
200
Simplify -(4a - 7).
What is -4a + 7
200
Find the measure of the third angle in a triangle whose other angles measure 51 degrees and 19 degrees.
What is 110 degrees
200
Simplify
What is -(x + 15)
300
Evaluate x - y when x = 7.31 and y = -5.62.
What is 12.93
300
Solve -10 = 400 - A
What is A = 410
300
Simplify (10a + 6) - (4a - 7).
What is 6a + 13
300
Solve for y in a triangle with degrees 42, y, and y.
What is 69 degrees
300
Simplify -(5 + k) + (k - 18)
What is -23
400
Simplify -4d - 8e + -4 + 6d - -9e - 11
What is 2d + e - 15
400
Solve 7(19h - 3) = 112
What is h = 1
400
Solve 20 - 2(x + 41) = -38
What is x = -12
400
Solve for each angle in a triangle:
(7x - 6)
(3x + 8)
(5x - 2)
What is 44, 58, and 78 degrees
400
Solve 5x - 3(5 - 2x) = -15
What is x = 0
500
Evaluate -a - -b, when a = -10 and b = 6.
What is 16.
500
Solve -3(a + 20) - 2a = 25
What is a = -17
500
Solve (x + 4)/5 - (x + 5)/6 - (5 - x)/3
What is 11x - 51/30
500
Angle A and angle B are supplements. The measure of A is 10 more than 4 times the measure of B. Write and solve an equation to find the measure of each angle.