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21r-7-r+5=-52 solve for r

Sagot :

akbusiness987

Answer:

r = - 2.5

[tex]r=-2\frac{1}{2}[/tex]

Step-by-step explanation:

21r - 7 - r + 5 = - 52

20r - 2 = - 52

20r - 2 + 2 = - 52 + 2

20r = - 50

20r ÷ 20 = - 50 ÷ 20

r = - 2.5

NEutrinoxAlvi
উত্তর: আর = - 2.5 আর = -2} ধাপে ধাপে ব্যাখ্যা: 21 র - 7-আর + 5 = - 52 20r - 2 = - 52 20r - 2 + 2 = - 52 + 2 20r = - 50 20r + 20 = - 50 ÷ 20 আর = - 2.5
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