Simplifying -2x + -3y = -7
Solving -2x + -3y = -7
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '3y' to each side of the equation. -2x + -3y + 3y = -7 + 3y
Combine like terms: -3y + 3y = 0 -2x + 0 = -7 + 3y -2x = -7 + 3y
Divide each side by '-2'. x = 3.5 + -1.5y Simplifying x = 3.5 + -1.5y
Multiply 5 by each number in the parentheses
Answer:
The last one is the answer
Step-by-step explanation:
39+91=130
13(10)=130
130=130
Answer:
19
Step-by-step explanation:
x - 6y
37 - 6(3)
37 - 18
19
I wasn't sure whether marked up meant increased or like discounted so ill show you step by step.
10% is $5.
20% would be $10 because it is double the price of 10%.
Therefore if you meant it is 20% more than the original it would be $60.
If you meant it would be 20% less is would be $40.
Sorry its not much help but i wanted to do the best i could.
