The sum of the measure of angle X and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y, what is the measure of angle X?

Question

anonymous · Answer

x + y = 90
x = 2y - 30

solve the eqaution

anonymous · Answer

multiply 1st eqaution x+y =90 by 2
so it would be 2x + 2y = 180
then add the second equation to the 1st 
i.e
(2x + 2y = 180 ) + (x-2y = -30)

so 3x= 150
x = 50

anonymous · Answer

hope u understood

anonymous · Answer

just like wat they said, but instead u can just do this,
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