exam
Maths Puzzle
Numerical Ability
5x-20+3x-2=180
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exam Other Question
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.
solve the inequality
15t-4>11t-16