book Maths Puzzle Numerical Ability

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USE THE SUBSTITUTION METHOD TO SOLVE THE LINEAR SYSTEM

1. X + 2 = -5
4x -3y = 2


2. 3x - 2y =4
x + 3y = 5


3. 3x + y = -2
x + 3y = 2

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book Other Question

from 80,000 jars produced, a manufacturer samples 1,200 and finds 7 of those defective. estimate the total number of defective jars. how do you change from slope intercept to standard form