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QveST [7]
3 years ago
12

2x+3y = 15 x-3y=3 Solve

Mathematics
1 answer:
Arada [10]3 years ago
6 0
By process of elimination. 3y and -3y get eliminated. Giving you

3x=18

Divide by 3 on each side

Giving you x=6

Plugging it into equation 2 you get

(6)-3y=3

Taking out the parenthesis you have

6-3y=3

Subtract by 6 on each side giving you

-3y=-3

Divide by -3 on each side giving you

y=1

So the answer for this equation is x=6 and y=1 or the ordered pair (6,1)
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7 0
3 years ago
(^^tap) SOS having a bit of trouble with this problem​
MrRa [10]

Answer:

x = -5.25 or 21/4

Step-by-step explanation:

When break the bracket out, if there is a minus sign in front of the bracket, when we break it out, the sign inside the bracket would become positive:

67 = 18 - (8x - 7)

67 = 18 - 8x - (-7)

67 = 18 - 8x + 7

67 = 18 + 7 - 8x

67 = 25 - 8x or rewrite for easier look: 25 - 8x = 67

25 - 8x = 67

8x = 25 - 67

8x = -42

Divide both side by 8, we got:

x = -42 / 8

x = -5.25 or 21/4

Hope this helped :3

5 0
3 years ago
Show work please <br><br> A 18 <br> B 2<br> C 9 <br> D 1
NeTakaya

Answer:

a

Step-by-step explanation:

the need to equal the same and none of the lower numbers work

6 0
3 years ago
4qu, when q= 5 and u = 7
professor190 [17]

Answer:

140

Step-by-step explanation:

Substitute q = 5 and u = 7 into the expression

4qu

= 4 × 5 × 7 = 20 × 7 = 140

4 0
3 years ago
Read 2 more answers
Type the missing numbers
andrew11 [14]

Answer:

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Step-by-step explanation:

-8, -4, 2

6 0
2 years ago
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