solve 15=3(13-2u)
solve 3(2n+7)=4(8-n)
solve 5(7-x)=20
mmc de 120,40 e 60
solve 3(2x-8)=2(4-x)
solve 22-8x=2x+9
solve 6=2(13+2f)
expand and fully simplify 2k(3k-4n)+n(3k-8n)
solve 3(2m+5)=4m+29
2e^(-t)>e^((t-100)/100)
