Question

2(5s+11)-3(4s+5)+7(2s-6)=10s-20 решите пожалуйста ​

Answer 1

Ответ: s = 7,5

2(5s + 11) - 3(4s + 5) + 7(2s-6) = 10s - 20.
10s + 22 - 12s - 15 + 14s - 42 - 10 s + 20 = 0.
2s = -22 + 15 + 42 - 20
2s = 15
s = 7,5

Answer 2

$2(5s+11)-3(4s+5)+7(2s-6)=10s-20\\10s+22-12s-15+14s-42=10s-20\\2s=15\\s=7,5$