Question

Solve it !!
1. x - 2 = 7
2. y + 3 = 10
3. 6 = z + 2
4. 3/7 + = 17/7
5. 6x = 12
6. x = 4/5 (x +0 )

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Answer 1

Step-by-step explanation:

$\sf \: Solution$

$\sf \: 1) \: x - 2 = 7 \\ \sf \: x = 7 + 2 \\ \sf \: x = 9$

$\sf \: 2) \: y + 3 = 10 \\ \sf \: y + 10 - 3 \\ \sf \: y = 7$

$\sf \: 3) \: 6 = z + 2 \\ \sf \: 6 - 2 = z \\ \sf \: 4 = z \\ \sf \: or \: z = 4$

$\sf \: 4) \: \frac{3}{7} + x = \frac{17}{7} \\ \sf \: x = \frac{17}{7} - \frac{3}{7} \\ \sf \: x = \frac{17 - 3}{7} = \cancel{ \frac{14}{7} } \\ \sf x = 2$

$\sf \:5) \: 6x = 12 \\ \sf \: x = \cancel{\frac{12}{6} } \: \\ \sf \: x = 2$

$\sf \: 6) \: x = \frac{4}{5} (x + 10) \\ \\ \sf \: x = \frac{4x}{5} + 8 \\ \\ \sf \: x - \frac{4x}{5} = 8 \\ \\ \sf \: \frac{5x - 4x}{5} = 8 \\ \\ \sf \: \frac{x}{5} = 8 \\ \\ \sf \: x = 8 \times 5 \\ \\ \sf \: x = 40$

Question 4 should be

3/7 + x = 17/7

Answer 2

Answer:

Refer to the attachment _/I\_

Hope it'll help you