Answer:
x=4
Step-by-step explanation:
Based on the given conditions, formulate: 100+35*x=120+30*x
Rearrange unknown terms to the left side of the equation:35x-30x=120-100
Combine like terms: 5x=120-100
Calculate the sum or difference: 5x=20
Divide both sides of the equation by the coefficient of variable: x=20/5
Cross out the common factor: x=4
get the result: x=4
Answer: x=4
