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Colt1911 [192]
2 years ago
14

-Solve each equation. Example x+3=12 9+3=12

Mathematics
1 answer:
mash [69]2 years ago
7 0

y + 9 = 9  | - 9 \\ y+ 9 - 9 = 9 - 9 \\ y = 0

10 + 2x = 20 | - 10 \\ 10 + 2x - 10 = 20 - 10 \\ 2x = 10 | \div 2 \\ 2x \div 2 = 10 \div 2 \\ x = 5

17 + 3c = 26 | - 17 \\ 17 + 3c - 17 = 26 - 17 \\ 3c = 9 | \div 3 \\ 3c \div 3 = 9 \div 3 \\ c = 3

x - 4 = 3 | + 4 \\ x - 4 + 4 = 3 + 4 \\  x = 7

2z - 7 = 7 | + 7 \\ 2z - 7 + 7 = 7 + 7 \\ 2z = 14 | \div 2 \\ 2z \div 2 = 14 \div 2 \\ z = 7

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