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valina [46]
3 years ago
10

50 POINTS! Arrange the steps to solve this problem. 9 steps. 50 POINTS!

Mathematics
2 answers:
Ivahew [28]3 years ago
6 0

\left\{\begin{array}{ccc}x+y=-2\\2x-3y=-9\end{array}\right\\\\\text{multiply the first equation by 3}\\3(x+y)=3(-2)\qquad|\text{use distributive property}\\3x+3y=-6\\\\\underline{+\left\{\begin{array}{ccc}3x+3y=-6\\2x-3y=-9\end{array}\right}\qquad\text{add 3x+3y=-6 to 2x-3y=-9, and solve for x}\\.\qquad5x=-15\qquad|:5\\.\qquad x=-3\\\\\text{Substitute the value of x in the first equation (x+y=-2)}\\\\-3+y=-2\qquad|+3\\y=1\\\\\text{The solution for the system of equations is (-3, 1)}

Anon25 [30]3 years ago
5 0

Answer:

4 1 3 2

Step-by-step explanation:

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7 0
3 years ago
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12) -7(-8 + y - 10 – x); use x = -3, and y = 10<br> A) 35<br> B) 40<br> C) 34<br> D) 25
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5 0
4 years ago
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ad-work [718]

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Step-by-step explanation:

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8 0
3 years ago
Cuál es la solución de la ecuación 9 x + 1 = 2x + 15
arsen [322]

Answer:

X=2

Step-by-step explanation:

9x+1=2x+15

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2. simplificar Ejemplo: 9x=2x+14

3. restar 2x de ambos lados ejemplo: 9x-2x=2x-2x+14

4. simplificar ejemplo: 7x=14

5.divide ambos lados entre 7 ejemplo: 7x/7= 14/7

6.Simplificar ejemplo: x=2

3 0
3 years ago
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