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⇒8 = 8x
⇒ x = 1
2.8+8x/2 = 16
⇒ 8+4x = 16
⇒ 4x = 16-8
⇒ 4x = 8
⇒ x = 2
8 = 8x
1 = x
x = 1
(2)8 + 8x/2 = 16
8 + 8x/2 - 8 = 16 - 8
8x/2 = 8
8x/2 * 2 = 8 * 2
8x = 16
8x/8 = 16/8
x = 2
(3) 4x/10 + 10 = 30
4x/10 + 10 - 10 = 30 - 10
4x/10 = 20
4x/10 * 10 = 20 * 10
4x = 200
4x/4 = 200/4
x = 50