Question

a) -182x +49 = -97x +87
b) -7(12x -9) = 10(5x -15)
c) 13x/4 -25 = 17x/4 -36
d) 57 -93x = 36 -125
e) 13(5x +8 -7x) = 18x

preciso saber o valor do x
equação

Answer 1

Olá!

a)
-182x+49= -97x+87
-182x+97x= 87-49
-85x= 38
x= - 38/85

b)
-7(12x-9)= 10(5x-15)
-84x+63= 50x-150
-84x -50x= -150-63
-134x= -213
x= 213/134

c)
13x/4 -25 = 17x/4 -36
13x -100 = 17x -144
13x-17x= -144+100
-4x= -44
x= -44/-4
x= 11

d)
57-93x= 36-125
57-93x= -89
-93x = -89-57
-93x= -146
x= 146/93

e)
13(5x+8-7x)=18x
13(-2x+8)= 18x
-26x+104= 18x
-26x-18x= -104
-44x= -104
x= 104/44
x= 26/11

Bons estudos...