Answer:
the answer is -1 its 1 Because you divide
A system of equations may have a single unknown to varying multiples of unknowns , as much the number of unknowns increases , that much system of equations are also built up , else , it can't be resolved
2x+7=?
X=6
2(6)+7=
12+7=19
In six years, the tree will be 19ft
2x+7=44
Minus seven on both sides
2x=37
Divide two from both sides
X=18.5
Thus, it will take 18 and a half years for the tree to reach 44ft
1. 8
2. 3
3. 6
4. 5
5. 6
6. 2
7. 1
8. 18
Because there is no solution if any number divide by 0
