SOLUTION: Can you help me with this problem It is 2(4-2r)=-2(r+5)

Question 105003: Can you help me with this problem
It is 2(4-2r)=-2(r+5)
Answer by doukungfoo(195) (Show Source): You can put this solution on YOUR website!
Solving for r
2(4-2r)=-2(r+5)
start on the left side of the equal sign and distribute 2 across (4-2r)
This means 2*4 and 2 * -2r
8 - 4r = -2(r+5)
now on the right side of the equal sign distribute -2 across (r+5)
8 - 4r = -2r - 10
move 8 to the right side of the equal sign by subtracting it from both sides
8 - 8 - 4r = -2r - 10 - 8
8's on the left side cancel out leaving
-4r = -2r - 10 - 8
-4r = -2r - 18
next move 2r to the left side by adding it to both sides
-4r + 2r = -2r + 2r - 18
2r's on the right side cancel out leaving
-4r + 2r = -18
-2r = -18
slove for r by dividing both sides by -2
-2r/-2 = -18/-2
r = 9
Check answer by trying it in the orginal equation
2(4-2r)=-2(r+5)
2(4-2(9))=-2(9+5)
2(4-18)=-2(14)
2(-14)=-2(14)
-28 = -28

RELATED QUESTIONS
Can you help me solve this problem? Add.... (answered by jim_thompson5910)

Please help me with this equation while using the distributive property: 7(r-7)+5=33 Can (answered by MathLover1)

Can you please help me to understand how Re=1-(1-R)(1-R) becomes Re=2R-R^2. I multiplied... (answered by josmiceli)

Can you please explain how to factor this trinomial? r^3+2r^2-15r? I have tried and this... (answered by stanbon)

hey can you help me with {{{sqrt(x^(2-n)/x^(n-2))}}} or {{{... (answered by sudhanshu_kmr)

I'm really confused with this problem - please help Simplify the expression; making... (answered by Earlsdon)

2r-3/7+3/7= -r/3 Can you help me solve this problem? Thank you! (answered by shymeerab)

Evaluate 2r/s for r=15 and 5=3, simplify your answer 2r/s Can someone please help me... (answered by stanbon)

Please help me with this problem: What is the solution to -17 - 2r < 3(r + 1)? Thank... (answered by josmiceli)