Question

Ma ajuta cineva va rog​

Answer 1

Explicație pas cu pas:

2) a-b = 607

a= 2015

2015 - b = 607

b = 2015 - 607

b = 1408

daca b = 2015

a - 2015 = 607

a = 607 + 2015

a = 2622

Ex 3

A)

a + 3*b = 18

X +3 *a + 9*b = 200

X + 3 * (a +3*b) = 200

X + 3 * 18 = 200

X + 54= 200

X = 200 - 54

X = 146

B)

X* (a + 3*b) = 54

X * 18 = 54

18X = 54

X = 54 : 18

X = 3