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viktelen [127]
3 years ago
8

SOMEONE HELP ONG ILL GIVE BRAINLY OMM

Mathematics
2 answers:
damaskus [11]3 years ago
8 0

Step-by-step explanation:

.....hope it helps

.......thnx

Anon25 [30]3 years ago
7 0
<h2>Question :</h2>

Solve the system of equations using the substitution method. Show all works

  • y = 5x - 7
  • - 3x - 2y = - 12

⠀ ⠀⠀

<h2>Answer :</h2>

  • \large \underline{\boxed{\bf{x = 2}}}
  • \large \underline{\boxed{\bf{y = 3}}}

⠀ ⠀⠀

<h2>Explanation :</h2>

⠀ ⠀⠀

<h3>Given :</h3>

  • y = 5x - 7⠀ ⠀⠀ ⠀ ⠀⠀ - (i)
  • - 3x - 2y = - 12⠀ ⠀⠀ ⠀- (ii)

⠀ ⠀⠀

<u>From equation (i), we have</u> :

\tt : \implies y = 5x - 7

⠀ ⠀⠀

<u>By </u><u>Substituting</u><u> y = 5x - 7 in equation (ii), we get</u> :

\tt : \implies - 3x - 2(5x - 7) = - 12

\tt : \implies - 3x - 10x + 14 = - 12

\tt : \implies - 13x = - 12 - 14

\tt : \implies - 13x = - 26

\tt : \implies 13x = 26

\tt : \implies x = \dfrac{26}{13}

\tt : \implies x = 2

\large \underline{\boxed{\bf{x = 2}}}

⠀ ⠀⠀

<u>Now, By </u><u>substitutin</u><u>g</u><u> x = 2 in equation (i), we get</u> :

\tt : \implies y = 5(2) - 7

\tt : \implies y = 10 - 7

\tt : \implies y = 3

\large \underline{\boxed{\bf{y = 3}}}

⠀ ⠀⠀

Hence, solution of given system of equations are :

  • \large \underline{\boxed{\bf{x = 2}}}
  • \large \underline{\boxed{\bf{y = 3}}}

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