a)x+11,5=10,5; x=10,5-11,5; x=-1
b)5+3x=8; 3x=8-5; 3x=3; x=1
c)6x+7-2x=3; 4x=3-7; 4x=-4; x=-1
d) 4:x=2:2,5; 2x=4*2,5; 2x=10; x=10/2; x=5
2. (3,5-1.1/5*4,5):0,19+50 = (3,5-1,2*4,5):0,19+50= (3,5-5,4):0,19+50= -1,9:0,19+50=-190 :19+50=-10+50=40
a)x+11,5=10,5; x=10,5-11,5; x=-1
b)5+3x=8; 3x=8-5; 3x=3; x=1
c)6x+7-2x=3; 4x=3-7; 4x=-4; x=-1
d) 4:x=2:2,5; 2x=4*2,5; 2x=10; x=10/2; x=5
2. (3,5-1.1/5*4,5):0,19+50 = (3,5-1,2*4,5):0,19+50= (3,5-5,4):0,19+50= -1,9:0,19+50=-190 :19+50=-10+50=40