Question

3 Aflați numărul necunoscut. a (x - 36): 36 = 36; b (27 + 2x): 27 = 27; - c (650 - x) · 65 = 4225. a
vă rog ​

Answer 1

a)

(x-36) : 36 = 36 => x-36=36*36 => x-36=1296 =>x=1296+36=>x=1332

b)

(27+2x):27=27 => 27+2x=27*27 => 27+2x=729=>2x=729-27=>2x=702=>x=702/2=>x=351

c)

(650-x)*65=4225 => (650-x)=4225/65 => 650-x=65 => x=650-65=>x=585