Question

Calcule o valor da expressão 5x-3y+xy para x=8 e y=7.

Answer 1

$Para\to x=8;y=7\\\\\\ 5x-3y+xy\to \\\\\\5*8-3*7+8*7\to \\\\40-21+56\to \\\\ 96-21\to \\\\75$

Answer 2

5x - 3y + xy

x = 8; y = 7

= 5.x - 3.y + x.y

= 5.8 - 3.7 + 8.7

= 40 - 21 + 56

= 40 + 56 - 21

= 96 - 21

= 75