Question

а) 24 * (z+9) = 288

б) 44 : z + 9 = 20

Answer 1

24 * (z+9) = 288
z+9= 288 : 24
z+9=12
z=12-9
z=3

проверка 24*(3+9)=288
24*12=288
288=288

44 : z + 9 = 20
44 : z = 20-9
44 : z = 11
z=44:11
z=4

проверка

44:4 + 9 = 20
11 + 9 = 20
20 = 20

Answer 2

a) 24×z+24×9=288 24z+216=288 24z=288-216 24z=72 Z=3