Question

ajutatima va rog mult la ex 5 ex 6 ex 7 b,b,b c,c,c dau coroana

Answer 1

5)

b) $(-11)$x$y = 121 <=> y = \frac{121}{-11} <=> y = -11$

c) $z = 6$

6)

b) $y:38 = 10 <=> y = 38$x$10 <=> y = 380$

c) $z = 342$

7)

b) $-8y+800 = 0 | (-800) <=> -8y = -800 <=> y = \frac{-800}{-8} <=> y = 100$

c) $22z + 440 = 0 <=> 22z = -440 <=> z = -20$

x -> inmultire