s) (8 x 9+5-5x8) - (30 - 5 x 2 + 5) = 100:2:2;


t) (36 -5x6-t) + 9x8-7 x 10
=4x7

u) (7*7-6x6+u) -24:3-2x 10 =81:9;

z) (6 x 9 - z) - 3 x 10 + 16:2=4x3x1.

v) (V-5x5-2x8) + 6 x 5-5x 10=6:2;​