Question

Solve. 1. 7x +3 -(x-x-3)=20
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2 4​

Answer 1

Answer:

$7x + 3 - (x - x - 3) = 20 \\ or. \: \: 7x + 3 - ( - 3) = 20 \\ or. \: \:7x + 3 + 3 = 20 \\ or.\: \:7x + 6 = 20 \\ or. \: \: 7x = 20 - 6 \\ or. \: \: 7x = 14 \\ or. \: \: x = 14 \div 7 \\ or. \: \:x = 2$

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