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Answer:
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Answer:
Step-by-step explanation:
Question.10: (2x-2)+(3x-3)+(9x-9) = 1
Solution: (2x-2)+(3x-3)+(9x-9) = 1
2x – 2 + 3x – 3 + 9x – 9 = 1
14x – 14 = 1
14x = 1 + 14
x = 15/14
Question.11: Solve each of the following equations:
(i)x+2 = -11
Solution: x + 2 = -11
x = -11 -2
x = -13
(ii) 2x – 1/6 = 3
Solution: 2x – 1/6 = 3
2x = 3 + 1/6
2x = 19/6
x = 19/12
(iii)7x – 7 = 21
Solution: 7x – 7 = 21
7x = 21 + 7
7x = 28
x = 4
(iv) -7x = 84
Solution: -7x = 84
-x = 84/7
x = -12
(v) 18+ 7x = -3
Solution: 18+ 7x = -3
7x = -3 -18
7x = -21
x = -3
(vi) 3(x-4) = 21
Solution: 3(x-4) = 21
3x – 12 = 21
3x = 21 + 12
3x = 33
x = 11
(vii) 3x/2 – 2x/3 = 8
Solution: 3x/2 – 2x/3 = 8
(9x – 4x)/6 = 8
5x = 48
x = 48/5Question.10: (2x-2)+(3x-3)+(9x-9) = 1
Solution: (2x-2)+(3x-3)+(9x-9) = 1
2x – 2 + 3x – 3 + 9x – 9 = 1
14x – 14 = 1
14x = 1 + 14
x = 15/14
Question.11: Solve each of the following equations:
(i)x+2 = -11
Solution: x + 2 = -11
x = -11 -2
x = -13
(ii) 2x – 1/6 = 3
Solution: 2x – 1/6 = 3
2x = 3 + 1/6
2x = 19/6
x = 19/12
(iii)7x – 7 = 21
Solution: 7x – 7 = 21
7x = 21 + 7
7x = 28
x = 4
(iv) -7x = 84
Solution: -7x = 84
-x = 84/7
x = -12
(v) 18+ 7x = -3
Solution: 18+ 7x = -3
7x = -3 -18
7x = -21
x = -3
(vi) 3(x-4) = 21
Solution: 3(x-4) = 21
3x – 12 = 21
3x = 21 + 12
3x = 33
x = 11
(vii) 3x/2 – 2x/3 = 8
Solution: 3x/2 – 2x/3 = 8
(9x – 4x)/6 = 8
5x = 48
x = 48/5