20 2/7 = 142/7 -20/35
find common denominator ( in this case it is 35)
35/7 =5 , multiply 142*5=710, 7*5 =35
142/7 = 710/35
710/35 - 20/35 = 710-20 = 690
690/35 now simplify that fraction
690/35 = 19.714
19*35 = 665
690-665=25
19 25/35
25/35 can reduce to 5/7
answer = 19 5/7
3|–3x + 9| = –18
divide both sides by 3
|–3x + 9| = –6
<span>absolute value cannot be a negative number</span>
<span>Answer: No solutions</span>
Substitute in the values for y and x into the equation.
so..
8 - 4.7(-1) - (2) solve the equation
8 + 4.7 -2
12.7 - 2
10.7
I think it is A. not sure though
9p+12=227
9 bus time p person per bus equal all people riding buses
Is there a choice like this?