2,5*(3х+0,4)-5,1х при х=8

Question

2,5*(3х+0,4)-5,1х при х=8

Answer 1

7,5х + 1 - 5,1х = 2,4х + 1.
2,4х + 1 = 2,4 × 8 + 1 = 20,2

Comments

Спасибо<З