Question

Решите на множестве Z уравнения:
3х+72=0
-8у+800=0

Answer 1

3х+72=0
3х=-72
72/-3
х=-24

-8у+800=0
-8у=-800
800/8
у=100

Answer 2

$3x + 72 = 0 \\ 3x = - 72 \\ x = - 72 \div 3 \\ x = - 24 \\ \\ \\ \\ - 8y + 800 = 0 \\ - 8y = - 800 \\ y = - 800 \div ( - 8) \\ y = 100$