Question

Calculeaza 3x + 7x -8x stiind ca:

a)x=12. b)x=5. c)x=100

Answer 1

a) x=12=> 3* 12 + 7*12+ 8*12 = 36+ 84- 96= 24

b) x=5=> 3*5+ 7*5- 8*5= 15+35-40= 10

c) x=100=> 3*100+7*100-8*100= 300+700-800= 200