Question

[thùy linh]

bài 2 giải các phương trình sau

b,2(x+3)-4=0

d,5(x-3)=3x-5

f,7(5-x)=11-5x

h,2(3x-1)-3x=10

j,3-2x=3.(x+1)-x-2

m,4(2x-3)-5=6(3-x)-7

Answer 1

[hoàng văn nghĩa]

b)x+3=4:2
 => x=-1
d)5x-15=3x-5
<=> 5x-3x=15-5
<=> 2x=10
<=> x=5
f) 35-7x=11-5x
<=> 35-11=-5x+7x
<=> 24=2x
<=> x=12

Answer 2

[hoàng văn nghĩa]

h) 6x-2-3x=10
<=> 3x=10+2
<=> x=4
j)3-2x=3x+3-x-2
<=> 3-2x=2x+1
<=>-4x=-2
<=> x=1/2