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2 years ago

Solve the equation -6(2a + 7) = -22- 8a

Mathematics

2 answers:

Andru [333]2 years ago

3 0

Answer: a = -5

Step-by-step explanation:

First, open up the brackets, and solve it

-12a -42 = -22 -8a. (-6 x 2a, and -6 x 7)

bring the -8a to the left side, so that all the a’s are together

-12a -42 + 8a = -22 (add -42 on both sides like we did with -8a)

-12a + 8a = -22 + 42

solve

-4a = 20

divide -4 on both sides

a = -5

katen-ka-za [31]2 years ago

3 0

Answer:

a=-5

Step-by-step explanation:

Here you go mate

PEMDAS: Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction

Step 1

-6(2a + 7) = -22- 8a Equation/Question

Step 2

-6(2a + 7) = -22- 8a Remove parenthesis

-12a-42=-8a-22

Step 3

-12a-42=-8a-22 Add 8a to the sides

-4a-42=-22

Step 4

-4a-42=-22 Subtract 42

4a=20

Step 5

4a=20 Divide both sides by 4

answer

-5

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1 year ago

Can you help me to solve this

Ber [7]

Answer:

$\frac{4a-2}{2a+1}$

Step-by-step explanation:

Factorise the numerator and denominator

8a² - 2 ← factor out 2 from each term

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Juan tiene cubos azules de 55 mm de arista y cubos rojos de 45 mm de arista. Los apila en dos columnas, una de cada color ; quie

balu736 [363]

the question in English

Juan has blue cubes with a 55 mm edge and red cubes with a 45 mm edge. He stacks them in two columns, one of each color; he wants the two columns to be the same height. How many cubes does he need, as a minimum, of each color?

Let

x---------> the number of blue cubes

y--------> the number of red cubes

we know that

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the table in the attached figure

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