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Maths Puzzle
Numerical Ability
I need help solving this problem:
Problem #39: 2x+4=8
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book Other Question
The altitude to the base of an isosceles triangle _______ longer than a leg of the triangle.
a)must be
b)may be
c)cannot be
solve each of the systems of equations. State which systems have no solution or an infinite number of solutions.
1. x-y+2z=3
-6x+y+3z=7
x+2y-5z=-4
2. x-y-2z=3
x+2