soal: tulislah kalimat berikut menjadi kalimat matematika yang memuat variabel.

A.x + 12 = 12
.x = 12 - 12
.x = 0
B.54 = t + 9
.t = 54 - 9
.t = 45
C.11 = y : 6
.y = 11 x 6
.y = 66
D.5 = c x 1/4
.c = 5 : 1/4
.c = 5.4
.c = 20
E.6 = w : 5
.w = 6 x 5
.w = 30
D.s+s+s = 16
.3s = 16
.s = 16 : 3
.s = 5 1/3 atau 5,33