exam Maths Puzzle Numerical Ability

49x exponent8 - 35x exponent6 - 56x exponent3 over
7x exponent3

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exam Other Question

The sum of the measures of the angles of any triangle is 180 degrees. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 60 degrees greater than each of A and B. What are the measures of the three angles? Here's a problemm that I neeed help with.

1-x/21=3(x+11)

thanks for you're help