1. Write linear equations for the following statements. a) Suhan and Saharsh have 15 pens together. Saharsh alone has 9 pens. b) Sujata is 7 years older than Sanjay. The sum of their ages is 31 years. c) If a number is divided by 5 and decreased by 7, we get 13 d) 150 less than 8 times a number is 74.
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statements. a) Suhan and Saharsh have 15 pens together. Saharsh alone has 9 pens.
= x + 9 = 15
. b) Sujata is 7 years older than Sanjay. The sum of their ages is 31 years.
= x+(x+7)=31 · 2x+7=31 · 2x=31-7 · 2x=24 · x=12 · sujata is 17 and her brother is 12.
c) If a number is divided by 5 and decreased by 7, we get 13
= (n - 7) / 5= 13
d) 150 less than 8 times a number is 74.
=Let the number be x. 150 less than 8 times a number is 74 means,. 8x - 150 = 74. 8x = 74 + 150.
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