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Vera_Pavlovna [14]

3 years ago

12

How can you solve this math problem 2/7y+5=9

2 answers:

kolbaska11 [484]3 years ago

7 0

2/7y+5=9
*it is important to note that 2 divided by 7 is the same as the fraction 2 over 7 or 2 7ths. Fractions are division.

1.) Multiple 7 by each side
2y+5=63

2.) subtract 5 from each side
2y=58

3.) divide each side by 2
y=29

4) Check your answer
2(29)+5=63
58+5=63
63=63

5.) y=29

nlexa [21]3 years ago

5 0

2/7y + 5 = 9

Subtract 5 from both sides

2/7y = 4

Multiply both sides by 7

2y = 28

Divide both sides by 2

<em><u>y = 14</u></em>

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Answer:

25,800

Step-by-step explanation:

Plug in 4 everytime you see T.

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1 year ago

{ y = - 4x-23-4x-3y=13

sleet_krkn [62]

For this case we have the following system of equations:

$y = -4x-23\\-4x-3y = 13$

We solve by the substitution method:

We substitute the first equation in the second equation:

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We apply distributive property considering that $- * - = +:$

$-4x + 12x + 69 = 13\\8x + 69 = 13$

We subtract 69 from both sides of the equation:

$8x = 13-69\\8x = -56$

We divide by 8 on both sides of the equation:

$x = \frac {-56} {8}\\x = -7$

We look for the value of the variable y:

$y = -4 (-7) -23\\y = 28-23\\y = 5$

Thus, the solution of the system is $(x, y): (-7,5)$

Answer:

$(x, y): (-7,5)$

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