Question

hallar el valor de la x


a)7x-8+2x=4x+17
b)21+10x-19=7x+30-4x
c)5(x+2)+2x=4x+31
d)3(x+7)+2(x+3)=x+39
e)4(3x+1)-x=3x+20
f)2(3+6x)-5=7(x+8)

Answer 1

A) 7x-8+2x=4x+17
9x-8=4x+17
X=5

B)21+10x-19=7x+30-4x
7x=28
X=4

C)5(x+2)+2x=4x+31
5x+10+2x=4x+31
7x+10=4x+31 ... 3x=21
X=7
D) 3x+21+2x+6=x+39
5x+27=x+39
4x=12
X=3
E)22x+4-x=3x+20
11x+4=3x+20
8x=16
X=2
F)6+12x-5=7x+56
5x=55
X=11