Answer:
Step-by-step explanation:
9=-d+17
(add d to both sides because it is the opposite of subtracting)
9+d=17
(subtract 9 from both sides because it is the opposite of adding)
d=17-9=8
48
Fourth day, sixth day, both geysers erupted
4 × 6 × 2 = 48
S + B = 33
S - B = 2
___________
2S = 35
S = 17,5
B = 15,5
