Question

daca a=18si b+c=57,calculatii.​

Answer 1

a) a + b + c = a + (b + c) = 18 + 57 = 75

b) a * 5 + b * 5 + c * 5 = 5 * (a + b + c) = 5 * 75 = 375

c) 3 * a + 2 * b + 2 * c = 3 * a + 2 * (b + c)

= 3 * 18 + 2 * 57 = 54 + 114 = 168

d) a * b + a * c + 7 * b + 7 * c = a * (b + c) + 7 * (b + c) = (b + c) * (a + 7)

= 57 * (18 + 7) = 57 * 25 = 1425