Question

7 и 8 прошу, решите

ТОЛЬКО 7 И 8

Answer 1

$7)3x+3b-\frac{x^{2}+2y^{2}}{x}=\frac{3x^{2}+3bx-x^{2}-2y^{2}}{x}=\frac{2x^{2}+3bx-2y^{2}}{x}\\\\8)5a-3b-\frac{3a^{2}-b^{2}}{a}=\frac{5a^{2}-3ab-3a^{2}+b^{2}}{a}=\frac{2a^{2}-3ab+b^{2}}{a}$