x + y = 18
x - y = -4
4+7=11 7+4=11 11-4=7 11-7=4
-51
Systems of equations don't equal numbers.
4+7=11 7+4=11 11-4=7 11-7=4 11=4+7 11=7+4 7=11-4 4=11-7
Solving the equations y/7 +6 = 11 Subtract 6 from both sides: y/7 = 5 multiply both sides by 7: 7 = 35
A system of linear equations is two or more simultaneous linear equations. In mathematics, a system of linear equations (or linear system) is a collection of linear equations involving the same set of variables.
If a system of equations is inconsistent, there are no solutions.
Inconsistent linear equations in two variables.
A system of equations may have any amount of solutions. If the equations are linear, the system will have either no solution, one solution, or an infinite number of solutions. If the equations are linear AND there are as many equations as variables, AND they are independent, the system will have exactly one solution.
A system of equations is a set of equations with more than one variable dealing with the same material. If there are 2 variables, then the system must have 2 equations before it can be solved. 3 variables need 3 equations, etc.
A system of equations with exactly one solution intersects at a singular point, and none of the equations in the system (if lines) are parallel.
Then they are simultaneous equations.