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Fynjy0 [20]
3 years ago
12

Which equation has no solution?

Mathematics
1 answer:
wlad13 [49]3 years ago
7 0

Answer:

<h2>D.</h2>

Step-by-step explanation:

A.

2.3y + 2 + 3.1y = 4.3y + 1.6 + 1.1y + 0.4              <em>combine like terms</em>

(2.3y + 3.1y) + 2 = (4.3y + 1.1y) + (1.6 + 0.4)

5.4y + 2 = 5.4y + 2              <em>subtract 5.4y from both sides</em>

2 = 2   TRUE → infinitely many solutions

B.

32x + 25 - 21x = 10x          <em>combine like terms</em>

(32x - 21x) + 25 = 10x

11x + 25 = 10x           <em>subtract 11x from both sides</em>

25 = -x       <em>change the signs</em>

-25 = x → x = -25   One solution

C.

1/3 + 1/7y = 3/7y              <em>subtract 1/7y from both sides</em>

1/3 = 2/7y             <em>multiply both sides by 7</em>

7/3 = 2y      <em>divide both sides by 2</em>

7/6 = y → y = 7/6       One solution

D. ?

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