2 years ago

(7x3 + 7x2 – 4) + (x3 – 5x2 – 3x + 8)

Mathematics

1 answer:

aksik [14]2 years ago

8 0

Answer:

it's not clear what do you want to with this? it's not even an equation explain your problem so we can solve it

Explain step by step:

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Please help I don't understand this

Effectus [21]

The correct answer is: [C]:  " $\frac{7}{18}$ " .
____________________________________________________
Explanation:
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Given:
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2 / (9x) = 4 / 7 ; solve for "x" ;
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Cross-multiply:

→ (9x)*4 = 2 * 7 ;

  → 36x = 14 ;

Divide each side of the equation by "36" ;
to isolate "x" on one side of the equation; & to solve for "x" ;

→ 36x / 36 = 14 / 36 ;

x = 14/ 36 ;

  → x = 14/36 = (14÷2) / (36÷2) = 7/18 ;
______________________________________________________

The answer is: " $\frac{7}{18}$ " ;

→ which is: Answer choice: [C]: " $\frac{7}{18}$ " .
______________________________________________________

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2 years ago