(- 1 2/3 + 1,6) : (-0,2)^2 = - 1 2/3
1) - 1 2/3 + 1,6 = - 5/3 + 16/10 = - 50/30 + 48/30 = - 2/30 = - 1/15
2) (-0,2)^2 = (-0,2) * (-0,2) = 0,04
3) - 1/15 : 0,04 = - 1/15 : 4/100 = - 1/15 * 100/4 = (-1*20)/(3*4) = - 20/12 = - 1 8/12 = - 1 2/3
X*2:5+87*4=428
x*2:5+348=428
x*2:5=428-348=80
x*2=80*5=400
x=400:2=200
1) _ 340 | 85
340 ——
—— | 4
0
2) • 1,55
4
———
6 2 0
3)+ 11,28
620
———
1 7, 4 8
4) _ 174,8 | 46
138 ———
——— | 3,8
4,68
4.68
———
0
5) _3,8
0,8
———
3,0=3