2.39 - 1.30 = 1.09 (no)
0.63 + 1.25 = 1.88 (no)
-2.96 + 4.35 = 1.39 (yes)
-5.66 + 1.25 = 4.41 (no)
The first way i.e. the 4(x)
Step-by-step explanation:
Its because there's no gap in between and the letter is surrounded by brackets on both sides so it cant be divided and it's the only letter . There's no rule in mathematics that allows you to multiply a single number surrounded by brackets at both sides.
Answer:
x=y-9....1
5x-6y=-1.....2
putting the value of x in eqn 2
5y-45-6y=-1
-y=44
y=44
The answer would be 18.2 gallons because they used up 5.8 gallons, they still have 12.4 gallons that they did not use and in order to get the original amount of gas they had before the trip, you would add up 12.4 and 5.8 to get the Original amount. Hope this helps.
