Answer:
b = 6
Explanation:
because this is a an x XQR and MQR will equal.
2 x 6 = 12
70 - 12 = 58
5 x 6 = 30
28 + 30 = 58
<MQR= 58
70-2b=28+5b
70=28+7b
42=7b
b=6
28+5b
28+5(6)
28+30
58
<MQR=58
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