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10a+35b=0; 21a-35b=217 ...associative property of addition
31a = 217 .............addition property of equality
a = 7 .....................division property of equality
2(7) +7b = 0 --------------substitution property of equality
14+7b = 0 -----------------mulplication property of equality
7b = -14 --------------subtraction property of equality
b = -2 ----------------simplify
Answer:
60(2)=30
Step-by-step explanation:
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Answer: go to your profile pic and then settings. it will say account information or something like that and then change username should be an option
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