The most crucial reason for a cell to minimize errors in cell division is

Cell’s who make errors when dividing further their risk for becoming cancerous

Explanation:

During cell division, DNA is replicated. If a mutation occurs during replication that cannot be repaired a cell will undergo apoptosis (programmed cell death). Sometimes, mutations occur to tumor suppressor genes and proto-oncogenes. These genes make sure a cell has no mutations before dividing/making the decision to start apoptosis. When these genes become mutated, the cell is less likely to correct potential mutations and is more at risk for becoming cancerous.

x = -6.5

explanation:

with this editor, you should be careful to put what you mean. 5/(2x - 7) = 3/(4x +14) is the way i will interpret it. cross multiply

5*(4x + 14) = 3*(2x - 7)       remove the brackets

20x + 70 = 6x - 21             add 21 to both sides

20x+ 70+21= 6x                 combine

20x + 91 = 6x                     subtract 20x

20x-20x+91=6x-20x           combine

91 = - 14x

x = - 91/14

x = - 6.5