Question 1 - Figure it out - Page 181 - Chapter 7 Class 7 - Finding the Unknown (Ganita Prakash II)

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Question 1 Write 5 equations whose solution is x = – 2.To do this, we start with 𝑥=−2 and do the same thing to both sides. Here are 5 examples: Multiply by 2 2 × x = 2 × –2 2x = – 4 Add 10 x + 10 = – 2 + 10 x + 10 = 8 Multiply by 5 , then add 3 5 × x + 3 = 5 × (–2) + 3 5x + 3 = –10 + 3 5x + 3 = – (10 – 3) 5x + 3 = –7 Subtract 5 x – 5 = –2 – 5 x – 5 = – (2 + 5) x – 5 = –7 Divide by 2 𝑥/2=(−2)/2 𝒙/𝟐=−𝟏 Multiply by 5 , then add 3 5 × x + 3 = 5 × (–2) + 3 5x + 3 = –10 + 3 5x + 3 = – (10 – 3) 5x + 3 = –7 Subtract 5 x – 5 = –2 – 5 x – 5 = – (2 + 5) x – 5 = –7 Divide by 2 𝑥/2=(−2)/2 𝒙/𝟐=−𝟏