Better Students Ask More Questions.
Solve.Be careful to examine work to see if the equation has no solution or an infinite...
2 Answers | add yours
eNoter, Dean's List
There is no solution offered.
9x+21 = 21+9x
infinite number of solution since LHS = RHS
Posted by spikey-shot on March 5, 2013 at 4:18 PM (Answer #1)
High School Teacher
(a) Solve -1+5(x-2)=12x+3-7x
Use the distributive property to clear the parantheses:
-1+5x-10=12x+3-7x Add(collect) like terms on both sides
5x-11=5x+3 Subtract 5x from both sides
-11=3 which is not true for any value of x.
There is no solution to the equation.
(b) Solve 9(x+3)-6=24-2x-3+11x Again use the dist. prop.
9x+27-6=24-2x-3+11x Add like terms
9x+21=9x+21 Subtract 9x from both sides
21=21 This is true for all values of x.
Posted by embizze on March 5, 2013 at 4:35 PM (Answer #2)
Join to answer this question
Join a community of thousands of dedicated teachers and students.