Z-3,96=-2 -4,81-a=3,5

Question

Z-3,96=-2

-4,81-a=3,5

Answer 1

Z=-2+3,96=1,96
-4,81-a=3,5 <=> -a=3,5+4,81 <=> a=-8,31

Answer 2

Решение: 1) z= -2+3,96. Z=1,96. 2) -a=3,5+4,81. -a=8,31. a= -8,31