Put these decimals in order
2.001 2.2 2.12 2.02

7x+8y=-18, 4x-9y=-3 solve the system of equations

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a