Question

1²/₃ + y = 2¾

-7b = ⁷/₈

3x = 2x + ¹/₇

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Answer 1

1²/₃ + y = 2¾
y=11/4 - 5/3
y=33/12 - 20/12
y=13/12
y=1 i 1/12

-7b = ⁷/₈ /:-7
b=-1/8

3x = 2x + ¹/₇
3x-2x=1/7
x=1/7

Answer 2

1²/₃ + y = 2¾
y=2¾-1⅔
y=1¹/₁₂


-7b = ⁷/₈
b=-⅛


3x = 2x + ¹/₇
3x-2x=¹/₇
x=¹/₇

Answer 3

1²/₃ + y = 2¾

y=2¾-1²/₃ = 33/12 - 20/12 = 13/12 = 1 1/12 (<- 1 1/12 to ułamek , jeden i jedna dwunasta)

-7b = ⁷/₈
b= ⁷/₈ : -7 = ⅞ * (-¹/₇) = -⅛


3x = 2x + ¹/₇

3x-2x=¹/₇
x=¹/₇