How do I solve problems like this? I did it last year, but I don't remember how to do it. Solve for x:

1/2x + 3 = 7

2x + 3 - 4x - 7 = 11

thanks!!

What is the missing constant term in the perfect square that starts with x^2 -20x

Solve the radical equation square root 25-40x=x-10

Tyrone’s hourly wage is $18 and his net pay is 72% of his earnings. tyrone spends about $1,800 on his monthly expenses. if tyrone works 40 hours per week and has no other sources of income, what is his total monthly cash inflow? (hint: assume that there are 4 pay periods per month.)