Weegy: 7( x - 4 ) - 2 ( x - 3) = 8 , 7x - 28 - 2x + 6 = 8 , 5x = 30, x = 6. (More)

Weegy: The inequality sign changes because you are switching the signs of the values in the inequality. So you must flip the inequality sign as well. [ Once all values become negative, that means that negatives are flipped from one side to the other (or abolished, if both sides were negative). If the sign is not flipped, it makes the solution a whole different range of numbers, because it changes the inequality. ] (More)

Weegy: x + 6 User: thanks good night! Weegy: You're welcome. Thanks for using weegy. Good night. (More)

Weegy: x = -2 (More)

Weegy: Herigonus, David Hume and Rene Descartes. Herigonus used symbols such as a3 to indicate a times a times a, although he did not raise the exponent. [ The first raised exponents were used by David Hume in 1636, where he used raised roman numerals (like iii or ix) to show exponents. In 1637, Rene Descartes used positive exponents written in the modern way. Read more: The Origin of Exponents | eHow.com ] (More)