exam Maths Puzzle Numerical Ability

I need help how would I solve the following Linear Equations and their Solutions. I confussed with these problems:

1. -2x = 3x + 4
2. 3x/4 = 6

Thank you

Craig

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exam Other Question

Log4260 = log4(4^x + 3 plus 4^x)

please note the 4 in the log 4260 is small and the 4 in the log4 is also small

HOw to get to the answer of x = 1? Sales--Tickets for a concert were sold to adults for $3 and to students for $2.
If the total sold were the amount of $ 824 and twice as many adult tickets were
sold,then how many of each were sold?