## (click here to return)

If 8x + 5 = 29, then x = 3.

Proof:

8x+ 5 = 29

if, and only if,

(8x + 5) - 5 = 29 - 5

if, and only if,

8x = 24

if, and only if,

(8x)/8 = 24/8

if, and only if,

x = 3

Therefore, 8x + 5 = 29 if, and only if, x = 3.

Therefore, if 8x + 5 = 29, then x = 3.

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8x+ 5 = 29

if, and only if,

(8x + 5) - 5 = 29 - 5

if, and only if,

8x = 24

if, and only if,

(8x)/8 = 24/8

if, and only if,

x = 3

Therefore, 8x + 5 = 29 if, and only if, x = 3.

Therefore, if 8x + 5 = 29, then x = 3.

(end of page)