Question

12. 3 (5z - 7) +2 (92 - 11) = 4(8z-7) - 111​

Answer 1

Solution:

$3 (5z - 7) +2 (92 - 11) = 4(8z-7) - 111$

$⟹15z-21+184-22=32z-28-111$

$⟹15z-21-22+184=32z-139$

$⟹15z-43+184=32z-139$

$⟹15z+141=32z-139$

$⟹15z-32z=-139-141$

$⟹-17z=-280$

$⟹17z=280$

$⟹z=280/17$

Or

$⟹z=16.47$