What is 7/6 divided by 4 in the simplest form?

Given abcd ac=38 and ae=3x+4 find the value of x

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i