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90 points! Can someone please explain what ie substitution in the work? I dont get it. My teacher is asking me to not substitute but I dont know what that is. I would really appreciate an answer!

90 points Can someone please explain what ie substitution in the work I dont get it My teacher is asking me to not substitute but I dont know what that is I wou class=
90 points Can someone please explain what ie substitution in the work I dont get it My teacher is asking me to not substitute but I dont know what that is I wou class=

Respuesta :

Answer:

x=5/11 | x=6, A

Step-by-step explanation:

For the first question- 3(4-2x)=-x+1

Use algebra to solve

1. 3(4-2x)=-x+1 Distribute

2. 12-6x=-x+1 Seperate like terms

3. 12-1=6x-x Combine

4. 11=5x

5. x=5/11

For the second babysitting question, since we want to multiply the combined hours worked by 9 (the amount of money per hour, the equation should be A. Use algebra to find the hours.

1. 9(5+x)=99 Distribute

2. 45+9x=99

3. 9x=54

4. x=54/9

5. x=6

kaykay00000000011
x=11/5 = 2.200

1. Simplify 11/5 which is 11/5=0

2.subtract a fraction from a whole

Rewrite the whole as a fraction using 5 as the denominator

Which is going to look like this:

x • 5 - (11) /. 5x - 11

5. = 5


At the end:

5x-11
5 = 0


3.now get rid of the denominator and multiply both sides of the equation by the denominator

Here’s how:

5x-11
5. •. 5=0•5

Now on the left hand side the 5 camels out the denominator while on the right side zero times anything is still zero

5x-11 =0


4. Solve : 5x-11=0

Add 11 to both sides
5x=11

Divide both sides by 5:

x=11/5 = 2.200




x=11/5 = 2.200

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