X-4=2x
3. 2
2x-8=6x
2x-6x=8
-4x=8
x=-2
4х-3у=2
у=1-2х
4х-3 (1-2х)=2
у=1-2у
4х-3+6х=2
у=1-2у
10х=2+3
у=1-2у
10х=5
у=1 -2х
х=5:10
у=1-2у
х=0,5
у=1-2×0,5
у=0,5
х=0
<span>1. (35,4-37,8)(0,56+0,4) = -2,4х0,96=-2,304
2. </span><span>(-2/13) * (3-114,4 / 44) = (-2\13)*(3-2,6)= -2\13*0,4=-2\13*4\10=-4\65
3. </span><span>(1/6*(3^3)-2,5) / 1/11+(25-37) = (1,5-2,5)\1\11-12=-6,5-12=-18,5
4. </span><span>(2,4 / 8-1,7) / (2+14*1/7)=(0,4-1,7)/(2+2)=-1,3:4=-0,325
5. </span><span>(4,3+(8,6-9,4)*4+5 / (1,6-2))=(4,3-3,2+5:0,4)=(1,1+12,5)=13,6
</span>