Step-by-step explanation:
5x+7+2x=7(2x+3)-63
We move all terms to the left:
5x+7+2x-(7(2x+3)-63)=0
We add all the numbers together, and all the variables
7x-(7(2x+3)-63)+7=0
We calculate terms in parentheses: -(7(2x+3)-63), so:
7(2x+3)-63
We multiply parentheses
14x+21-63
We add all the numbers together, and all the variables
14x-42
Back to the equation:
-(14x-42)
We get rid of parentheses
7x-14x+42+7=0
We add all the numbers together, and all the variables
-7x+49=0
We move all terms containing x to the left, all other terms to the right
-7x=-49
x=-49/-7
x=+7 - Answer
Mr Tanaka used 10 gallons of gas. You find this answer by diving the denominator (3) with the total number of gallons of gas. So 15 divided by 3 is 5. Now you get the number 5, and multiply it by the numerator (2). 5*2 is 10. That is how you find the answer.
Answer:
y=2/1x+4, y=2x+4
Step-by-step explanation:
the fraction comes from rise over run which then simplifies to 2 and 4 is the y-intercept
27x^3 + 162x^2 + 324x + 216
