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siniylev [52]
3 years ago
10

Look at the picture and solve the equations

Mathematics
1 answer:
ch4aika [34]3 years ago
6 0

Answer:

1. a= 7, one solution

2. x=x, infinitely solutions

3. y=3, one solution

4. x=6, one solution

5. no solution

6. k = 2, one solution

Step-by-step explanation:

1.

7a - 6 = 43

7a = 49

one solution

a = 7

2.

3x + 4 = 3x + 4

3x = 3x

x = x

infinitely solutions

3.

4(2y - 4) = 5y + 2

8y - 16 = 5y + 2

3y -16 = 2

3y = 18

one solution

y= 6

4.

multiply 2 on both sides

5x + 6 = x + 30

4x = 24

one solution

x = 6

5.

4e - 19 = 4(e-4)

4e - 19 = 4e -16

-19 ≠ -16

no solution

6.

10k - 2(k+3) = 10

10k -2k - 6 = 10

8k - 6 = 10

8k = 16

one solution

k = 2

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