Which of the following four equations has the solution of the lowest value? (1 point)
A: x - 7 = 28
B: x + 19 = -5
C: x - 6 = -16
D: x + 25 = 2
To find the solution of each equation, we need to isolate the variable x by performing the inverse operation.
A: x - 7 = 28
Adding 7 to both sides: x = 35
B: x + 19 = -5
Subtracting 19 from both sides: x = -24
C: x - 6 = -16
Adding 6 to both sides: x = -10
D: x + 25 = 2
Subtracting 25 from both sides: x = -23
Out of the four equations, the solution with the lowest value is x = -24 from equation B.
Which of the following equations has a different value of a than the others? (1 point)
A: x - 7/8 = 3/2
B: x + 0.875 = 1.5
C: x - 0.025 = 0.6
D: x + 9/8 = 7/4
To compare the values of "a" in each equation, we need to isolate the variable x by performing the inverse operation.
A: x - 7/8 = 3/2
Adding 7/8 to both sides: x = 31/8
B: x + 0.875 = 1.5
Subtracting 0.875 from both sides: x = 0.625
C: x - 0.025 = 0.6
Adding 0.025 to both sides: x = 0.625
D: x + 9/8 = 7/4
Subtracting 9/8 from both sides: x = 7/8
Comparing the values of "a" in each equation, we can see that equations B and C have the same value of a, 0.625, while equations A and D have different values of a. Therefore, the answer is either A or D.