A: (-8×⁴-21ײ+7)+(6׳-13ײ+7×-10)= B: (-14×3+7×)+(-10ײ+6×-19)=
Me ayudan con el procedimiento

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in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.