3 - (2x + 4) = 2(3x + 1) solve for x and show work

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

Three times the sum of a number and seven is negative thirty-six. what is the number?

What is always true about a positive integer raised to a negative odd power?