exam Maths Puzzle Numerical Ability

find the point of intersection for the lines below using the substitution
3x+2y=4
y=1-2x

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exam Other Question

The sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that is 9 cm and a second side that is 3 cm less than twice the third side, what are the possible lengths for the second and third sides? The sum of two numbers is 11. Three times one of the numbers is sixteen less than four times the other. Find the numbers.