Question

G) 9×-23=13×-27

H) 0,8+2×=×+3,5

Answer 1

G)
$9 x - 23 = 13x - 27 \\ - 23 + 27 = 13x - 9x \\ 4 = 4x \\ 1 = x$
H)
$0.8 + 2x = x + 3.5 \\ 2x - x = 3.5 - 0.8 \\ x = 2.7$