KillerSteamcar
08.02.2021 •
Mathematics
1. Write an expression equivalent to:
-4(5x - 9) + 6(2x + 5)
2. Write an expression equivalent to -4x - 36.
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Ответ:
1) -8x + 66
2) -2(5x+10) -2(-3x+8)
Ответ:
To decide if an integer is a rational number, we try to write it as a ratio of two integers. An easy way to do this is to write it as a fraction with denominator one. Since any integer can be written as the ratio of two integers, all integers are rational numbers