x - 7 = 13, x + 7 = 13, 2x = 10, x/2 = 10, 2x - 7 = 13, 2x + 7 = 13, 13 = 2x - 7, 7 - 2x = 13.

Papan mata

Gaya visual

Pilihan

Tukar templat

Pulihkan autosimpan: ?