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I NEED HELP PLEASE IM BEGGING YOU PLEASE!!!!!!!

I NEED HELP WITH THE ONES THAT A HIGHLIGHTED PLEASE

I NEED HELP PLEASE IM BEGGING YOU PLEASE!!!!!!! I NEED HELP WITH THE ONES THAT A HIGHLIGHTED-example-1
User Vivek Raja
by
8.2k points

2 Answers

3 votes

Answer: r = 6

Explanation:

64= 8(r+2)

64/8 = 8(r+2) / 8 divide both sides by 8

8 = r + 2 The eights cancel out

- r = 2 + 8 Move the variable to the left and change its sign

- r = - 6 to get id of the negative -r make the 6 a positive

r=6

-4(r + 6) = -63

- 4r - 24 = -63 Distribute 4 through ( ) -4 x4 -4 x6

-4r =63 + 24 Move -24 to the right (making it a positive )

-4r = 39

-4r / -4 = 39 /4 divide both sides by -4

r= 39/4

User Ajackster
by
8.1k points
7 votes

Answer:

Explanation:

21) 64=8(r+2)

Step 1: Simplify both sides of the equation.

64=8(r+2)

64=(8)(r)+(8)(2)(Distribute)

64=8r+16

Step 2: Flip the equation.

8r+16=64

Step 3: Subtract 16 from both sides.

8r+16−16=64−16

8r=48

Step 4: Divide both sides by 8.

8r

8

=

48

8

r=6

29) Step 1: Simplify both sides of the equation.

−4(r+6)=−63

(−4)(r)+(−4)(6)=−63(Distribute)

−4r+−24=−63

−4r−24=−63

Step 2: Add 24 to both sides.

−4r−24+24=−63+24

−4r=−39

Step 3: Divide both sides by -4.

and you get r= 39\4

hope that helps

User Mridul Bagla
by
7.4k points