Given that ∠A=(3x+70)°, ∠B=(7x-50)°, and ∠A=∠B, find the degrees of ∠A and ∠B.
已知∠A=(3x+70)°，∠B=(7x-50)°，且∠A=∠B，求∠A，∠B的度数．
<gadget id="calculator">70 + 50</gadget>
<output>120</output>

<gadget id="calculator">7 - 3</gadget>
<output>4</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<gadget id="calculator">3 * 30</gadget>
<output>90</output>

<gadget id="calculator">90 + 70</gadget>
<output>160</output>

<result>160</result>