jessiscol
jessiscol
27-02-2018
Mathematics
contestada
what is the value of x?
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Аноним
Аноним
27-02-2018
They are vertically opposed angles.
They are equal!
So x+40 = 3x and we solve it -> x-3x = -40 -> -2x = -40 -> 2x=40 so
x = 20
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marie8802
marie8802
27-02-2018
well first you have to set the two equal to each other
x+40=3x, then subtract x from both sides
40=2x, then divide both by two to get x alone
x=20
Answer Link
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