7x-3x=7+5
4x=12
X=3
This is the answer
Answer:
I'm sorry i''m positive i can answer this but i have to see the image to do so
Step-by-step explanation:
Answer: x = -8
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.
Hope this helps you out! ☺
Answer:
Step-by-step explanation:


Hence lake will never be free of pesticide.
Answer:
x=20
Step-by-step explanation:
hope this helps