15-b=4b-5(5-3)
Multiply the bracket by -5
(-5)(5)=-25
(-5)(-3)=15
15-b=4b-25+15
15-b=4b-10
Move 15 to the other side
Sign changes from +15 to -15
15-15-b=4b-10-15
-b=4b-25
Move 4b to the other side.
-b-4b=4b-4b-25
-b-4b=-25
-5b=-25
divide both sides by -5
-5b/-5=-25/-5
Answer: b=5
I did this manually on some notepaper but my scanner is not working.
The answer is 72 cm^2
12
since the difference of the first and third value is ten, each value is five more than the previous value
He can make 140 different outfits
The answer should be 2.5, because you are cutting the value that they gave you in half
