Question

a)9x-13=7×+7


b) 14×-8=18×+10

c)3×+19=-41-2×
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Answer 1

a)

$9x - 13 = 7x + 7 \\ 9x - 7x = 7 + 13 \\ 2x = 20 \\ x = \frac{20}{2} \\ x = 10$

b)

$14x - 8 = 18x + 10 \\ 14x - 18x = 10 + 8 \\ - 4x = 18 \\ x = - \frac{ 18}{4} \\ x = - \frac{9}{2}$

c)

$3x + 19 = - 41 - 2x \\ 3x + 2x = - 41 - 19 \\ 5x = - 60 \\ x = - \frac{60}{5} \\ x = - 12$