6.8 5. By checking work records, a contractor finds that Kenny Dewitt can wire a room addition in 9 hr. It takes Betty Wohnt 7 hr to wire the same room. How long would it take if they worked together?

9. The HP Officejet 4215 All-in-one printer, fax, scanner, and copier can print in black one copy of a company's year-end report in 10 min. the HP Officejet 7410 All-in-one can print the same report in 6 min. How long would it take the two printers, working together, to print one copy of the report?

15. A long distance trucker traveled 120 mi in one direction during a snowstorm. The return trip in rainy weather was accomplished at double the speed and took 3 hr less time. Find the speed going.

Examples was shown as this truck going forward 120 mi, r, t
Coming back 120 mi, 2r, t-3

It shows how to solve the equations with fractions. Also, it investigates the together and alone word problems. The response is detailed and has a '5/5' rating.

Why should we clear fractions when solving linear equations and inequalities? Demonstrate how this is done with an example.
Why should we clear decimals when solving linear equations and inequalities? Demonstrate how this is done with an example.
Post one other example (either fraction or decimal) for classmates to solve

1) Solve by the addition method.
3x + 2y = 14
3x - 2y = 10
2) Solve by the addition method
5x = 6y + 50
2y = 8 - 3x
3) Solve. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.
4) Can't type fractions, so

Look what stress does. I submitted the wrong problems to you for help. Please help me with the following 18 problems - I submitted the incorrect problems.
#17)
2x + 3
--------
x^2 - 16
#33)
w^2 - 49
---------
w + 7
#77)
2x^12
-------
4x^3
#87)
-2x - 4
-----------
x^2 - 5

Please assist me in solving these equations.
A. Solve and find solution to X
15x^4 -13x^2 + 2 = 0
1. Solve and find the solution for X
w^2 - 6w - 27 = 0
2. Solve and find the solution to X
X^2 + 14x - 4 = 0
B. Multiply
(r + d) (r^2 - rd + d^2)
1. Multiply
(-3n)^2(2n^7)^2
E. Find the solutions. What is/are the soluti

1.Solve the following equation 19 - 3n = - 2n
2.Solve the following equation 2(a - 4) + 4 = 5(9 - a)
3.Solve the following equation and check your answer. (1/2b)- (1/2)= 1/4b
4.Solve the following equation
0.6(x - 50) = 18 - 0.3(40 - 10x)
5.Solve the following equation for the variable x. t - 5x = 4x