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3 years ago

30. Solve the equation below. 2 X- - 5 = 7 PLEASE HELP !!

Mathematics

2 answers:

nalin [4]3 years ago

4 0

9514 1404 393

Answer:

x = 18

Step-by-step explanation:

Add the opposite of the constant (-5), and multiply by the inverse of the coefficient of x (2/3).

$\dfrac{2}{3}x -5=7\\\\\dfrac{2}{3}x=12 \qquad\text{add 5}\\\\x=\dfrac{3}{2}\cdot 12 \qquad\text{multiply by $\dfrac{3}{2}$}\\\\ \boxed{x=18}$

Serga [27]3 years ago

4 0

Answer:

2/3x -5=7

x=18

Step-by-step explanation:

start by adding each side by 5

after doing so you should have

2/3x =12

multiply each side now my 3/2

the fractions should cancel out and leave x by itself

multiply (12)3/2

gives you 18.

x=18

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Step-by-step explanation:

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Subtract 5 × (equation 2) from equation 1:

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Divide equation 1 by -7:

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{0 x+y = 2 | (equation 2)

Collect results:

Answer: {x = 5 , y = 2

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