Question

2（x+3）-5（1-x）=3(3-1) 4-3(2-x)=5x 4x-3(20-x)=6x-7(9-x) 4-3(2-

Answer 1

(1) 1/3 - x-1/2 = 1

-x=-1/3+1/2+1

= -2/6 + 3/6 + 6/6

= 7/6

x=-7/6

(2) x+8/3=-x

x+x=-8/3

2x=-8/3

x=-4/3

(3) 1-m/2 - 3-3m/4=1

-m/2-3m/4 = -1+3+1

-3m/2 = 3

-3m=6

m=-2

(4) x-2/0.2 - x+1/0.5=3

5(x-2) - 2(x+1) = 3

5x-10 - 2x-2 = 3

3x = 10+2+3

x= 5