5x-4+2x=3 Can yall help me solve this? I have to get one of these answers: x=1, x= 1/7, x=-1/7, or x=-1.
This is for a test that I have to take in algebra so please do the math correctly so I don't get a bad grade.

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?