Question

resolva as seguintes equações a) 8x - 7 = 2x + 5
b) 7x +8=4x-10
c)5x-6+x=9+x
d)2x -1= -3+x+4

me ajudem por favor preciso pra hoje, ​

Answer 1

Resposta:

a) 8x - 2x = 5 + 7

6x = + 12

x = 2

b) 7x - 4x = - 10 - 8

3x = -18

x = -6

c)6x - x = 9 + 6

5x = 15

x = 3

d) x = -3 + 5

x = 2

Answer 2

$\large{a)8x - 7 = 2x + 5}$

$\large{8x - 2x = 5 + 7}$

$\large{6x = 12}$

$\large{x = 12 \div 6}$

$\large\boxed{\red{{x = 2}}}$

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$\large{b)7x + 8 = 4x - 10}$

$\large{7x - 4x = - 10 - 8}$

$\large{3x = - 18}$

$\large{ x = - 18 \div 3}$

$\large\boxed{\red{{x = - 6}}}$

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$\large{c)5x - 6 + x = 9 + x}$

$\large{5x - 6 = 9}$

$\large{5x = 9 + 6}$

$\large{5x = 15}$

$\large{x = 15 \div 5}$

$\large\boxed{\red{{x = 3}}}$

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$\large{d)2x - 1 = - 3 + x + 4}$

$\large{2x - 1 = 1 + x}$

$\large{2x - x = 1 + 1}$

$\large\boxed{\red{{x = 2}}}$

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Att, IzabelaCristina2006 ❤️ ♈