A1=-15
a2=a1+d→-4=-15+d→d=11
Answer:
Inequality Form: m<7/3
Interval Notation: -∞, 7/3
System of equations subtraction method
In the addition/subtraction method, the two equations in the system are added or subtracted to create a new equation with only one variable. ... Substitute the variable back into one of the equations and solve for the other variable. Check the solution--it should satisfy both equations.
