Question

ex9 a)
4(x+5)-5(x+3)=x-5
b.) 4x+1+2(x-5)=5(x+1)
c.) 3(2x+3)-2(3x+2)=-3(x+2)+2
d.) -3x+5-4(x-1)=-2(x+1)-24
e.) x-15+3(x+1)=5(x-2)+11
f.)5(x+2)-2(2x+3)=34-5x

Answer 1

a)4(x+5)-5(x+3)=x-54x+20-5x-15=x-5
-x-x=-5-20+15
-2x=-10     inmultim -1
x=10/2
x=5

b.) 4x+1+2(x-5)=5(x+1)
4x+1+2x-10=5x+5
6x-5x=5-1+10
x=14

c.) 3(2x+3)-2(3x+2)=-3(x+2)+2
6x+9-6x-4=-3x-6+2
3x=2-6+4
x=0

d.) -3x+5-4(x-1)=-2(x+1)-24
-3x+5-4x+4=-2x-2-24
-7x+2x=-26-5-4
-7x=-35    inmultim-1
x=35/7
x=5

e.) x-15+3(x+1)=5(x-2)+11
x-15+3x+3=5x-10+11
4x-5x=1+15-3
-x=13    inmultim -1
x=-13

f.)5(x+2)-2(2x+3)=34-5x
5x+10-4x-6=34-5x
x+5x=34-10+6
6x=30
x=30/6
x=5