Answer:
They subtracted 2x from both sides.
Step-by-step explanation:
They removed 2x from each side because in order to find x it will have to be removed on one side. Since 2x - 2x = 0 it is 2x is out of the equation for the right side and on the left side -2x -(-4x) = -6x which means that there is one x variable left in the equation thus making it solvable.
Answer:
In the picture
Step-by-step explanation:
I hope that it's a clear explanation, hope that helps.
Answer:
no can you help me
Step-by-step explanation:
There are 20 sheep and 30 chickens.
If you multiply 20 by 4 you will get 80 (number of feet for 20 sheep). Next, multiply 30 by 2 to get 60 (number of feet per 30 chickens). If you add 60 and 80, you will get 140 feet and by adding 20 and 30 you get 50 heads. Thus meaning there are 20 sheep and 30 chickens.
I hope this helps!
Answer:
Yes
With an extra 3000CHF
Step-by-step explanation:
In year 2005, the exchange rate was 1$ = 1.15CHF
The student came in with $20,000.
The amount he had in CHF(swiss franc) = ?
$1 = 1.15C
$20,000 = x CHF
X = (20000 × 1.15) / 1
X = 23,000CHF
When he came to Zürich in 2005, he has 23,000 swiss franc.
But the exchange rates changed in 2006 to C1.30 against the dollar.
$1 = 1.30CHF
$20,000 = xCHF
X = 26,000CHF
In 2006, he would've had 26,000CHF.
The difference between what he would've had in 2006 against 2005 is
26,000CHF - 23,000CHF = 3000CHF
He would've had an extra 3000CHF if he came in the year 2006.