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3 years ago

HELP!! WILL BE MARKED BRAINLIEST!! 1. Justify each step in solving the equation 4x = 7(x - 3) by

1 answer:

4 0

Answer: If u divide both sides by 3 you get the value o x 2 answer: Combine terms by transporting. The equation becomes 4x -7x = -21

Step-by-step explanation: 1. 4x=7(x-3) -----> Start with the given.

2. 4x=7x-21 -----> Distribute 7 by multiplying it to the individual terms inside the parenthesis. 7(x) - 7(3) = 7x -21

3. -3x=-21 ------> From step 2, combine like terms by transposing. The equation becomes 4x - 7x = -21. Simplifying, it becomes -3x = -21

4. x = 7 -----> Divide both sides by -3, you get the value o x.

Hope this helps :)

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The answer to the problem is as follows:

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3 years ago

If with 150 grams of ground meat a tortilla is prepared to make a hamburger. How many tortillas can I make with one and a half k

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You can make 10 tortillas with one and a half kilograms of ground meat

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3 years ago

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3 years ago

Brainliest and points !! ANSWER ASAP !!

Igoryamba

Answer:

Step-by-step explanation:

The sum of the ages of a Mother and her son is 78 , three years ago the mother is five times as old as the son, what is their present ages?

To solve this , let the age of the mother be x and the age of the son be y , from the first statement :

x + y = 78

Three years ago , the mother will be x- 3 and the son will be y - 3 , from the second statement:

x - 3 = 5 ( y-3)

x- 3 = 5y - 15

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This is called a simultaneous linear equation , that means it is a linear equation.

The side of a square is xcm , if the difference between the area and the perimeter is 12 , find the legth of its side.

Interpretation:

The formula for the area of a square is $l^{2}$ and the perimeter is 4l , from the question , we have

$x^{2}$ - 4x = 12

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4 years ago