3x+7=-x-1
move -x to the other side
sign changes from -x to +x
3x+x+7=-x+x-1
3x+x+7=-1
4x+7=-1
move 7 to the other side
sign changes from +7 to -7
4x+7-7=-1-7
4x=-8
Divide by 4 for both sides
4x/4=-8/4
Answer: x=-2
D=dollars earned
T=time spent painting the fence.
(1,5) (2,10) (3,15)
D=5T
Answer:
SP = 1274
Discount 9%
Selling price = MP (100 - d) / 100
1274 = MP (100 - 9) / 100
1) MP = 1400
i) After 5% discount = 1400 x 0.95 = 1330
After 4% discount = 1330 x 0.96 = 1276.80
35 mins is the answer.
1/2 +1/3 = 5/6 = 30mins
1/6 remaining is distributed over 5 mins
30/6 =5
30+5 = 35mins
