Question

Matematyka klasa 7 zadanie 3 z obliczeniami na jutro daje naj i duzo pkt

Answer 1

a) 4/3x + 5/8x = (4/3 + 5/8)x = (32/24 + 15/24)x = 47/24x = 1 23/24x

b) 1,2x + 2/3x = (12/10 + 2/3)x = (36/30 + 20/30)x = 56/30x = 1 26/30x = 1 13/15x

c) 1/4x + 5/6x - 1/2x = (1/4 + 5/6 - 1/2)x = (3/12 + 10/12 - 6/12)x = 7/12x

d) 3/7x - 0,2x + x = (3/7 - 0,2 +1)x = (3/7 - 1/5 + 1)x = (15/35 - 7/35 + 1)x = 1 8/35x