Sign In
Ask Question
Mathematics
Janiya
1 January, 14:31
Solve for x. 45 (15x+20) - 7x=56 (12x-24) + 6
+1
Answers (
2
)
Malachi Buchanan
1 January, 15:25
0
675*+900-7*=112*-1344+6
668*+900=112*-1338
556*=-2238
x=1119/278
x=4.025
Comment
Complaint
Link
Gregory Compton
1 January, 18:02
0
1119/2
Equations may be true or false, just as word sentences may be true or false. The equation:
3 + x = 7
will be false if any number except 4 is substituted for the variable. The value of the variable for which the equation is true (4 in this example) is called the solution of the equation. We can determine whether or not a given number is a solution of a given equation by substituting the number in place of the variable and determining the truth or falsity of the result.
Example 1 Determine if the value 3 is a solution of the equation
4x - 2 = 3x + 1
Solution We substitute the value 3 for x in the equation and see if the left-hand member equals the right-hand member.
4 (3) - 2 = 3 (3) + 1
12 - 2 = 9 + 1
10 = 10
Ans. 3 is a solution.
The first-degree equations that we consider in this chapter have at most one solution. The solutions to many such equations can be determined by inspection.
Example 2 Find the solution of each equation by inspection.
a. x + 5 = 12
b. 4 · x = - 20
Solutions a. 7 is the solution since 7 + 5 = 12.
b. - 5 is the solution since 4 (-5) = - 20.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“Solve for x. 45 (15x+20) - 7x=56 (12x-24) + 6 ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Each of the four sides of a swimming pool measures 9 meters. The pool is 5 meters deep. How much water will be needed to fill it completely?
Answers (1)
Which is a factor of 6x2+x-7? X+1 2x+1 6x+7 3x+7
Answers (1)
Choose the fraction that has not been reduced 10-19, 15-16,19-38,21-34
Answers (1)
38 is 95% of what number
Answers (1)
If x is 5, then 6x = ?
Answers (2)
New Questions in Mathematics
A triangle is rotated 90° about the origin. Which rule describes the transformation?
Answers (1)
What is the inverse for this linear function f (x) = - 2x+4?
Answers (1)
Which is greater 30% 0.03
Answers (1)
If the height of this box was 10in, how man 2in cubes could fit inside this box?
Answers (2)
Ac equals 5in cb equals 3in. what does ab equal to
Answers (1)
Home
»
Mathematics
» Solve for x. 45 (15x+20) - 7x=56 (12x-24) + 6
Sign In
Sign Up
Forgot Password?