Answer:

16.)??

17.) 7xz-5z=

z x(7x-5)

18.) 2y + 2=0

2y = - 2

y= - 1

19.)???

20.) y + z = 0

y = -z

Step-by-step explanation:

paki brainlest po tan lng po masasagot ko

Answer:

16. 4x-3y= 18

EXPLANATION:

4x - 3y = 4 (3) - 3 (-2)

= 12 - (-6)

= 18

17. 7xz-5z= 64

EXPLANATION:

7xz-5z= 7(3)(4)-5(4)

=21(4)-20

=84-20

=64

18. 2x+1/2y+2= 7/6

EXPLANATION:

2x+1/2y+2= 2(3)+1/2(-2)+2

= 6+1/4+2

=7/6

Step-by-step explanation:

yan lang po kasi lowbat na po ako.

i hope it helps po :)