Answer:
A, Yes
Step-by-step explanation:
Your first answer is A because Multiply /divide both sides by the same non zero constant . Second, answer is Yes .
Hope this helps;)
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5 × 70 = 5 × 7 tens = 350
WHY?
1 ten = 10 ones
70 ÷ 10 = 7
So 7 tens.
Hope I helped ya!