Question

Упростите выражение 7m+3n-m-8n-11, если m=3, а n=1,5

Answer 1

6m-5n-11

6*3-5*1.5-11=18-7.5-11=-0.5

Answer 2

7m+3n-m-8n-11 = 7m-m+3n-8n-11 = 6m-5n-11, m=3, n=1.5

6*3-5*1.5 -11 = 18-7.5-11 = -0.5