Standard form is ax+by=c
mnus 7y both sides
6x-7y=0
Answer: THIRD OPTION.
Step-by-step explanation:
Given the following inequality:
You can follow these steps in order to solve it:
1. Apply Distributive property on the left side:
2. Add 15 to both sides of the inequality:
3. Finally, divide both sides of the inequality by 3:
The symbol is 
means "Greater than or equal to", and indicates that 7 is include in the solution.
Therefore, the solution can be expressed as:
Now you must mark this point with a closed dot on the number line and shade everything to the right.
7 books with a cost of 28$ then a 2$ charge which will put him right at 30
Answer:
Before anyone gives anyone money, Mario has 24 dollars and Roberto has 12 dollars. After they give each other money, both of them have 18 dollars.
Step-by-step explanation:
Mario has twice as much as Roberto, BUT if Mario gives Roberto 6 dollars, then they have the same amount.
M = 2R
M - 6 = R + 6
To isolate M, you need to add 6 on both sides.
M - 6 + 6 = R + 6 + 6
M = R + 12
M = 2R
Substitute M for the value above that we found.
R + 12 = 2R
Now we subtract R on both sides, so that only one side has the variable R.
R - R + 12 = 2R - R
12 = R
M = 2R
Substitute for the value of R.
M = 2 x 12
M = 24
