问题1.解决x：x – 2 = 7
解决方案：
x – 2 = 7
x=7+2 (Adding two on both sides of equation)
x=9
问题2.求解y：y + 3 = 10
解决方案：
y + 3 = 10
y = 10 –3 (Subtracting 3 from both sides of equation)
y = 7
问题3.求解z：6 = z + 2
解决方案：
6 = z + 2
z + 2 = 6 (Rearranging to standard form)
z = 6 – 2 (Subtracting two from both sides)
z = 4
问题4.求解x：3/7 + x = 17/7
解决方案：
3/7 + x = 17/7
x = 17/7 – 3/7 (Subtracting 3/7 on both sides)
x = 14/7 (Simplifying the equation)
x = 2
问题5：求解x：6x = 12
解决方案：
6x = 12
x = 12/6 (Dividing both sides by 6)
x = 2
问题6：求解t：t / 5 = 10
解决方案：
t/5 = 10
t = 10 × 5 (multiplying both sides by 5)
t = 50
问题7：求解x：2x / 3 = 18
解决方案：
2x/3 = 18
2x = 18 × 3 (Multiplying both sides by 3)
2x = 54
x = 54/2 (Dividing both sides by 2)
x = 27
问题8.求解y：1.6 = y / 1.5
解决方案：
1.6 = y/1.5
y/1.5 = 1.6 (Rearranging to standard form)
y = 1.6 × 1.5 (Multiplying both sides by 1.5)
y = 2.4
问题9：求解x：7x – 9 = 16
解决方案：
Given that 7x – 9 = 16
7x = 16+9 (Adding 9 on both sides of equation)
7x = 25
x = 25/7 (Dividing both sides by 7)
问题10：求解y：14y – 8 = 13
解决方案：
14y – 8 = 13
14y = 13+8 (Adding 8 on both sides of equation)
14y = 21
y = 21/14 (Dividing both sides by 14)
y = 3/2 (Simplifying the equation)
问题11：求解p：17 + 6p = 9
解决方案：
17 + 6p = 9
6p = 9 – 17 (Subtracting 17 from both sides of equation)
6p = -8
p = -8/6 (Dividing both sides by 6)
p = -4/3(Simplifying the equation)
问题12.求解x：x / 3 +1 = 7/15
解决方案：
x/3 + 1 = 7/15
x/3 = 7/15 – 1 (Subtracting both sides by 1)
x/3 = (7 – 15)/15 (Making common denominator)
x/3 = -8/15
x = -8/15 × 3 (Multiplying both sides by 3)
x = -8/5