2 answers:
Answer:
1. y = 7
2. y = 6
3. y = 7/2
4. y = 8
Step-by-step explanation:
I searched it up and found the answer.
<h3>
<u>Solution</u><u>:</u></h3>
<em>Let's </em><em>solve </em><em>each </em><em>equation </em><em>one</em><em> </em><em>by </em><em>one </em><em>:</em>
➝ 7y + 7 = 56
➝ 7y = 56 - 7
➝ 7y = 49
➝ y = 49 / 7
➝ y = 7
- <u>4</u><u>2</u><u> </u><u>-</u><u> </u><u>6</u><u>y </u><u>=</u><u> </u><u>6</u>
➝ 42 - 6y = 6
➝ - 6y = 6 - 42
➝ - 6y = - 36
➝ y = -36 / - 6
➝ y = 6
- <u>(</u><u> </u><u>y </u><u>+</u><u> </u><u>1</u><u> </u><u>)</u><u>²</u><u> </u><u>=</u><u> </u><u>9</u>
➝ ( y + 1 )² = 9
➝ y + 1 = √ 9
➝ y + 1 = 3
➝ y = 3 - 1
➝ y = 2
- <u>1</u><u> </u><u>+</u><u> </u><u>7</u><u>2</u><u> </u><u>/</u><u> </u><u>y </u><u>=</u><u> </u><u>1</u><u>0</u>
➝ 1 + 72 / y = 10
➝ 72 / y = 10 - 1
➝ 72 / y = 9
➝ 72 = 9y
➝ 9y = 72
➝ y = 72 / 9
➝ y = 8
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