2z + 3x + 4y + 6z + x – 3y = 6x + 5y – 2x – 3y + 7x + y =
2x +4 +3 + 5x =
6x + 5y + 2x – 3y =
6x + 5y + 2x + 3y + 2x =

Workings too, please! Thank you! :)

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?

With this question, the answer with the red arrow is incorrect!