patulong namn poh please poh

Answer:
expression:
1.5x+7
2.2√3m+n
3.4(x+8)
4.x^3-y^3
5.5-3x
equation:
1.5t+9=2t-16
2.x+3=-5
3.15=2x-5
4.28=-21+7u
5.15√4-7x=9