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ICSE Class 9 Answered

7X+8=10
Asked by padmavathipethakamsetty | 12 Jul, 2022, 07:06: PM
Expert Answer
7x + 8 = 10
7x + 8 - 8 = 10 - 8 (subtracting 8 from both sides)
7x = 2
x = 2/7
 
3x - 5 = x - 10
3x - 5 + 5 = x - 10 + 5 (adding 5 on both sides)
3x = x - 5
3x - x = x - 5 - x (subtracting x from both sides)
2x = -5
x = -5/2
 
 
9 - 3x = 7 - 4x
9 - 3x + 3x = 7 - 4x + 3x (adding 3x on both sides)
9 = 7 - x
9 - 7 = 7 - x - 7
2 = -x
x = -2
 
Answered by | 13 Jul, 2022, 12:46: AM
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