Stamps 7819

Robo and Mišo have a total of 350 stamps. If Robo gave Misha 50 marks, Misha would have six times more marks than Robo. How many fewer marks does Robo have than Mišo?

Correct answer:

x =  150

Step-by-step explanation:


r+m = 350
6(r-50) = m+50
x = m-r

r+m = 350
6·(r-50) = m+50
x = m-r

m+r = 350
m-6r = -350
m-r-x = 0

Row 2 - Row 1 → Row 2
m+r = 350
-7r = -700
m-r-x = 0

Row 3 - Row 1 → Row 3
m+r = 350
-7r = -700
-2r-x = -350

Row 3 - -2/-7 · Row 2 → Row 3
m+r = 350
-7r = -700
-x = -150


x = -150/-1 = 150
r = -700/-7 = 100
m = 350-r = 350-100 = 250

m = 250
r = 100
x = 150

Our linear equations calculator calculates it.

Try another example


Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you have a system of equations and looking for calculator system of linear equations?

You need to know the following knowledge to solve this word math problem:

Grade of the word problem:

Related math problems and questions: