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To estimate the sum or difference of 8/9 + 4/7 it should be <span>1 1/2
</span>It is also a way to find<span> an approximate answer to a solution. To </span>estimate<span> products and quotients of mixed numbers, round the </span>fractions<span> to the nearest whole number. If the </span>fraction<span> is less than 12 round down and if it is more than 12 round up. First, since 411 is less than 12,8411 rounds down to 8.</span><span>
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Answer:
4x and -2x
Step-by-step explanation:
They have 2 of the same variable unlike the others
