System of equations - 7th grade (12y) - math problems

Number of problems found: 177

  • Simple equations
    enc2 Solve system of equations: 5x+3y=5 5x+7y=25
  • Two numbers
    numbers_1 Find two numbers whose difference and ratio is 2.
  • Pair
    dvaja They have together 39 years - he has 2 times as she was when he was equal as she has today ....
  • Have solution
    numbers_44 The sum of four consecutive even numbers is 92. Determine these numbers.
  • Grandfather and grandmother
    family_24 The old mother is 5 years younger than the old father. Together they are 153 years old. How many years has each of them?
  • Number ratio
    ratio2 Calculate two positive numbers that its ratio is 6:6 and difference was 0.
  • Product
    multiplicationchart The sum and the product of three integers is 6. Write largest of them.
  • Purchase
    supermarket Three buyers pay € 468. The first paid 3-times more than second, third half over second. How many euros paid each of them?
  • Hostel
    student Students are accommodated in 22 rooms. Rooms were 4 and 6 bed. How many rooms in which type occupied 106 children there?
  • Two numbers
    num_3 Determine the numbers x and y so x + y = 8 is truth and the numbers are in the ratio of 4: 5.
  • Two numbers
    third The sum of two numbers is 1. Identify this two numbers if you know that the half of first is equal to the third of second number.
  • Flowerbed
    flowers_9 Ondra digs the bed in 20 minutes. Cuba in 30 minutes. For how long do they dig together?
  • Saving
    2kc Paul save 155Kč in 46 2 Kc and 5Kc coins. How much saved 2Kc and 5Kc coins?
  • Ratio
    ratio_1 6 numbers are in the ratio 1:5:1:5:5:5. Their sum is 242. What are the numbers?
  • Algebrogram
    plus_2 Solve algebrogram: mama+anna=vari How many solutions are?
  • Two trains
    train_freight_5 There were 159 freight wagons on the railway station creating 2 trains. One had 15 more wagons than the other. How many wagons did each train have?
  • Three friends
    pizza_4 Divide 570 euros to three friends so that first will get 50 euros less than the second and third twice more than the first. How many euros will get everyone?
  • Addends
    two Number 118 divide into two addends, so first addend is 69 greater than 75% of the second addend.
  • Three men
    GUYS Alex is half younger than Jan, which is one-third younger than George. The sum of their ages is 48. How are these three men old?
  • Blueberries
    blackberries Miko and Anton have a total of 1,580 blueberries. Miko and Anton have them in the ratio 2: 3. Determine how much each of them has.

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