ГДЗ / ГДЗ Математика 8 клас Істер (2025) / Тема 1. ДРОБОВІ ВИРАЗИ / 2.14

Тема 1. ДРОБОВІ ВИРАЗИ » 3.6





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Спростіть вираз: 1) (3x-7y)/4xy + (15y-3x)/4xy = (3x-7y+15y-3x)/4xy = 8y/4xy = 2/x; 2) (7a+ p^3)/3p – (7a-2p^3)/3p = (7a+ p^3- (7a-2p^3))/3p = (7a+ p^3- 7a+2p^3)/3p = (3p^3)/3p = p2; 3) (5a- b^4)/(6b^5 ) – (b^4+ 5a)/(6b^5 ) = (5a- b^4- (b^4+ 5a))/(6b^5 ) = (5a- b^4- b^4- 5a)/(6b^5 ) = (-2b^4)/(6b^5 ) = –1/3b; 4) (3a-4)/8a + (4a+5)/8a – (1-a)/8a = (3a-4+4a+5-(1-a))/8a = (7a+1-1+a)/8a = 8a/8a = 1.

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Тема 1. ДРОБОВІ ВИРАЗИ

1.1-1.2
1.3-1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22-1.23
1.24
1.25
1.26-1.27
1.28
1.29
1.30
2.1
2.2
2.3
2.4
2.5
2.6-2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21
2.22
2.23
2.24 (1)
2.24 (2)
2.25 (1)
2.25 (2)
2.26
2.27
2.28
2.29
2.30
2.31
3.1-3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.17
3.18
3.19
3.20
3.21
3.22
3.23-3.24
3.25
3.26
3.27
3.28
4.1-4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12-4.13
4.14
4.15
4.16
4.17
4.18
4.19
4.20
4.21
4.22
4.23
4.24
4.25
4.26
4.27
4.28
4.29
4.30
4.31
4.32
4.33
4.34
4.35
4.36
4.37
4.38
4.39
4.40
4.41
4.42
4.43
4.44
4.45
4.46-4.47
4.48
4.49
4.50