Using adding and substitution to find the value of x for the set of equations x-y=120 x+y=150
1 answer:
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Answer:
x = 23 degrees
Because if you look at diagram x is vertical to angle FBC, and angle FEC and angle EBA are alternate interior angles so they are equal to each other, and AC is a straight line which means it equals to 180 degrees.
x = 23 degrees