exam
Maths Puzzle
Numerical Ability
(-3x+7)-(5x-6)
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exam Other Question
Solve the nonlinear inequality. Express the solution using interval notation and graph the solution set
2x+6/x-2 < 0
Solving systems of equations using matrices:
4x + y = 7
-5x - y + z - w = 1
z+w = 7
I have z = 7 and know that w is any real number so far but am stuck solving for x and y. Help please.