Answer:
(-1,1)
Step-by-step explanation:
I'm assuming that you meant 4x+1=3x?
Subtracting 4x, we get 1=-x. Multiplying by -1, we get x=-1 as the solution.
Answer:
C. 3x=21
x=7
Step-by-step explanation:
Answer:
7.6504 x 10^10
Step-by-step explanation:
Answer:
7/8
Step-by-step explanation:
If you turn 1 3/4 back into a simplified fraction it is 7/4. But the denominators need to be the same, so multiply the bottom number 2 and the top number by 2. That gives you 14/8. If she used 7/8 of it, then you just do 14/8 - 7/8 which gives you 7/8.