Respostas
respondido por:
2
(7×-8).2=15+2×
14×-16×=+8.2-15
2×=+16-15
2×=1
×=2÷1
×=2
14×-16×=+8.2-15
2×=+16-15
2×=1
×=2÷1
×=2
12+(3×+6).+35=70
3×=-12-6.-35-70
3×=6. -105
3×= 630
×=630÷3
×=210
obg
D nd
muito obg mesmo
D nd
respondido por:
1
(7x-8).2 = 6.(3x - 4)
14x - 16 = 18x - 24
- 16 + 24 = 18x - 14x
8 = 4x
4x = 8
x = 8/4
x = 2
(7x - 8).2 = 15 + 2x
14x - 16 = 18x - 24
- 16 + 24 = 18x - 14x
8 = 4x
4x = 8
x = 8/4
x = 2
(7x - 8).2 = 15 + 2x
14x - 16 = 15 + 2x
14x - 2x = 15 + 16
12x = 31
x = 31/12
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