A number decreased by 32 is -58. Find the number.

The number is . (Give only the value of the number as your answer.)

Question

A number decreased by 32 is -58. Find the number. 

The number is . (Give only the value of the number as your answer.)

gschibby · Answer

That one's easy ;)
-58 + 32 = ?

anonymous · Answer

Just add -58+ 32

anonymous · Answer

-26

gschibby · Answer

Exactly! ^^

anonymous · Answer

thank you. I have another question, can you help?

anonymous · Answer

@Gschibby

gschibby · Answer

Sure!

anonymous · Answer

A blue bike is $14 less than a red bike. The sum of their prices is $300. How much is the red bike?  

The red bike is $. (Be sure to type only the price of the red bike. DO NOT use a dollar sign ($) in your answer  
I think it is 157?

gschibby · Answer

Okay, so the correct way to express this is (x = red bike, y = blue bike)
x + y = 300
and
x - y = 14
Solve the bottom one on y:
y = x - 14
Insert that in the first one as y
x + (x-14) = 300
solve it on x:
2x = 314
x = 314/2
x = 157
That is your x = red bike = 157 dollars
add that to the second equation:
157 - y = 14
solve for y:
y = 157 - 14
y = 143 dollars

gschibby · Answer

You can also solve this using matrixes, but this is a little less complicated ;)

anonymous · Answer

Thank you so much for your help :)