Question

(a:6+6):6=4.


a:b=3
b:2=c
a-b=40afla 3a-4b+5c

Answer 1

4*6=24
24-6=18
18*6=108
verificam
108/6=18+6=24/6=4
a=108
108/b=3
b=108/3=36
36/2=18(c)
108-36=72 am calculat de mai multe ori dae nu mia dat 40
(3*108)-(4*36)+(5*18)=324-144+90=270
sper ca e corect

Answer 2

(a:6+6):6=4. a:6=4×6-6. a:6=24-6. a:6=18. a=18×6. a=108. Proba: (108:6+6):6=(18+6):6=24:6=4. a:b=3. b:2=c. a=108. b=108:3. b=36. 36:2=18 (c). 3a-4b+5c=3×108-4×36+5×18. 3a-4b+5c=324-144+90. 3a-4b+5c=180+90. 3a-4b+5c=270. Nu merge ca a-b=40..