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MrRissso [65]
3 years ago
7

PLZ HURRY IT'S URGENT!!!!!!

Mathematics
2 answers:
Gnom [1K]3 years ago
7 0

Answer:

D. 9

Step-by-step explanation:

We have been given an equation and we are asked to find the solution for our given equation.

t(7-2)=9\cdot 7-9\cdot 2

Upon factoring out 9 from right side of our equation we will get,

t(7-2)=9(7-2)

t(5)=9(5)

5t=9*5

Upon dividing both sides of our equation by 5 we will get,

\frac{5t}{5}=\frac{9*5}{5}

x=9

Therefore, the solution to our given equation is 9 and option D is the correct choice.

Anton [14]3 years ago
5 0

I think the correct answer your looking for is D) 9

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5x – 7y= 58<br> y = -x - 2<br><br> X=<br> Y=
amm1812

Answer:

x = 11/3 , y = -17/3

Step-by-step explanation:

Solve the following system:

{5 x - 7 y = 58 | (equation 1)

y = -x - 2 | (equation 2)

Express the system in standard form:

{5 x - 7 y = 58 | (equation 1)

x + y = -2 | (equation 2)

Subtract 1/5 × (equation 1) from equation 2:

{5 x - 7 y = 58 | (equation 1)

0 x+(12 y)/5 = (-68)/5 | (equation 2)

Multiply equation 2 by 5/4:

{5 x - 7 y = 58 | (equation 1)

0 x+3 y = -17 | (equation 2)

Divide equation 2 by 3:

{5 x - 7 y = 58 | (equation 1)

0 x+y = (-17)/3 | (equation 2)

Add 7 × (equation 2) to equation 1:

{5 x+0 y = 55/3 | (equation 1)

0 x+y = -17/3 | (equation 2)

Divide equation 1 by 5:

{x+0 y = 11/3 | (equation 1)

0 x+y = -17/3 | (equation 2)

Collect results:

Answer: {x = 11/3 , y = -17/3

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