Penjelasan dengan langkah-langkah:
45 + 55 = 3 + 19
(45 + 55) = 3.... + 19
(45 + 55) = 3x + 19
100 = 3x + 19
3x = 100 - 19
3x = 81
x = 81 ÷ 3
x = 21
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Penjelasan dengan langkah-langkah:
45 + 55 = 3 + 19
(45 + 55) = 3.... + 19
(45 + 55) = 3x + 19
100 = 3x + 19
3x = 100 - 19
3x = 81
x = 81 ÷ 3
x = 21