Question

find n in the in the following equation
1) 3(5z-7)-4 (8z-7)+111=-2 (9z-11)
2)3(n-4)+2 (4n-5)=5 (n+2+16)​

Answer 1

Answer:

1)

3(5z−7)+2(9z−11)=4(8z−7)−111

15z−21+18z−22=32z−28−111

33z−43=32z−139

z=−96

2)3n-12 + 8n-10 = 5n+10 + 1611n - 22 = 5n + 2611n - 5n = 26+ 226n = 48n = 48/6n = 8 so , the answer is 8.