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Answers by David O.

answer question (answer)

7x +8=1   You need to get the variable by itself and then divide by the number in front of the variable; 2 step process.  So 7x+8-8=1-8; 7x=-7  divide each side by by 7 x=-1

Can you simplify this expression: -(9x-3) (answer)

Add a negative sign to each term in parentheses; so it becomes -9x--3 which is -9x+3. Look for a common factor; both 9 and 3 are divisible by 3. So it becomes -3(3x-1). Hope this helps somebody.