Question

Tìm x :

a, ( 4x - 13 ) - (3x + 17) = -19 - (-12)

 

Answer 1

a, ( 4x - 13 ) - (3x + 17) = -19 - (-12)

=> 4x - 13 - 3x - 17 = -19 + 12 

=> x = -19 + 12 + 13 + 17 = 23

Answer 2

 ( 4x - 13 ) - (3x + 17) = -19 - (-12)

4x - 13- 3x - 17= -7

(4x-3x)-13=-7

x-13=-7

x=-7 +13

x=6