Error analysis Student 1

3x +4 = 25
3x+4+ (-4) = 25 + (-4)
3× ÷ 3 = 21÷ 3
x - 7

Student 2

× ÷ 4 - 5 = 7
× ÷ 4 - 5 + (-5) = 7 + (-5)
4• × ÷ 4 = 2• 4
x= 8

Student 3

51 = -15z + 6
51+ (-6) = -15z + 6 + (-6)
45÷ -15 = -15z ÷ -15
z= -3​​

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

yes

step-by-step explanation:

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

i think the answer is b