Question

lee y resulve..................​

Answer 1

42.

$5a ^{2} b + (- 8a ^{2} b )\\ 5a ^{2} b - 8a ^{2} b \\ 3 {a}^{2} b \:$

43.

$(4x^{3} {y}^{2} z + 8x^{3} {y}^{2} z) - (5x^{3} {y}^{2} z + 2x^{3} {y}^{2} z) \\ 12x^{3} {y}^{2} z - 7x^{3} {y}^{2} z \\ 5x^{3} {y}^{2} z$

44.

$(12xyz + 3xyz) - 8xyz \\ 15xyz -8xyz \\ 7xyz$

45.

$- 7 {a}^{2} b + 6 {a}^{2} - 9 {a}^{2}b + 7 {a}^{2} +1 3 {a}^{2} b - 4 {a}^{2} \\ 3 {a}^{2} b + 9 {a}^{2}$

46.

$5x+4y+8x+y- \frac{1}{2}x + \frac{4}{3} y \\ 13x + 5y - \frac{1}{2}x + \frac{4}{3} y \\ 13x - \frac{1}{2} x + 5y + \frac{4}{3} y \\ \frac{25}{2} x + \frac{19}{3} y$