Question

Calcule as expressões algébricas:

a)3x+x+8=40
b)5x+2x=49
c)5x+x+4x-10=
d)17x+2=36

Answer 1

a)
3x + x + 8 = 40
4x = 40 - 8
4x = 32
x = 32/4
x = 8

b)
5x+2x=49
7x = 49
x = 49/7
x = 7

c)
5x+x+4x-10 = 0 
6x + 4x = 10
10x = 10
x = 10/10
x = 1

d)
17x + 2 = 3617x = 36 - 2
17x = 34
x = 34/17
x = 2