Explanation:
14. 2x -5 = 7
2x = 12
x = 6
16. 6x -6 = 12
6x = 18
x = 3
18. 2x + 7 = 1
2x = -6
x = -3
17. n/3 + 10= 12
n/3 = 2
n = 6
19. x/7 + 9 = 11
x/7 = 2
x = 14
21. 2 times the quantity of the sum of 5 and t is 8
Let's say x is "number"
14) 2x-5=7
16) 6x-6=12
18) 2x+7=1
20) 8(n-3) or 8(3-n)
19) 9 + x/7=11
21) The product of 2 and the sum of 5 and t is 8
Hope this helped : )
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