Решите: 1) -(3.3x+1.2)-(0.7x+1.6)=0 2) -(4.1x+2.5)-(2.3+3.9)=1.6x 3) (3.6x+2.5)-(1.8x+2.3)=1.6x 4) (1.3x-2.5x)-(3.8x-2.3)=3.7 5) -(7.7x+2.2)-(5.5x-9.9x)=1.1
Решите:
1) -(3.3x+1.2)-(0.7x+1.6)=0
2) -(4.1x+2.5)-(2.3+3.9)=1.6x
3) (3.6x+2.5)-(1.8x+2.3)=1.6x
4) (1.3x-2.5x)-(3.8x-2.3)=3.7
5) -(7.7x+2.2)-(5.5x-9.9x)=1.1
Ответ(ы) на вопрос:
1)-3,3х-1,2-0,7х-1,6=0 -4х-2,8=0 -4х=2,8 х=2,8/(-4) х=-0,7 2)-4,1х-2,5-2,3-3,9=1,6х -4,1х-8,7=1,6х 1,6х+4,1х=-8,7 5,7х=-8,7 х=-8,7/5,7 х=-87/57 (дробь) 3)3,6х+2,5-1,8х-2,3=1,6х 1,8х+0,2=1,6х 0,2х=-0,2 х=-1 4)1,3х-2,5х-3,8х+2,3=3,7 -2,5х-0,2=3,7 -2,5х=3,9 х=3,9/(-2,5) х=-1,56 5) -7,7х-2,2-5,5х+9,9х=1,1 -3,3х-2,2=1,1 -3,3х=3,3 х=-1
1) -(3.3x+1.2)-(0.7x+1.6)=0 -3.3x-1.2-0.7x-1.6=0 -4x=2.8 x=-0.7 2) -(4.1x+2.5)-(2.3+3.9)=1.6x -4.1x-2.5-6.2-1.6x=0 -5.7x=8.7 x=87/57 3) (3.6x+2.5)-(1.8x+2.3)=1.6x 3.6x+2.5-1.8x-2.3-1.6x=0 0.2x=-0.2 x=-1 4) (1.3x-2.5x)-(3.8x-2.3)=3.7 -1.2x-3.8x=-2.3+3.7 -5x=1.4 x=-0.28 5) -(7.7x+2.2)-(5.5x-9.9x)=1.1 -7.7x+4.4x=2.2+1.1 -3.3x=3.3 x=-1
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