Ответ:
1) 5(3а-2)+3(4-5а)=15a-10+12-15a=2
2)-4(2t-x)+3(x-5t)=-8t+4x+3x-15t=-23t+7x
3)(4a-2)*0,5+(3-5a)*(-0,4)=2a-1-1,2+2a=4a-2,2
4)1,5(2a-t)-2,5(4a+3t)=3a-1,5t-10a-7,5t=-7a-9t
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Ответ:
1) 5(3а-2)+3(4-5а)=15a-10+12-15a=2
2)-4(2t-x)+3(x-5t)=-8t+4x+3x-15t=-23t+7x
3)(4a-2)*0,5+(3-5a)*(-0,4)=2a-1-1,2+2a=4a-2,2
4)1,5(2a-t)-2,5(4a+3t)=3a-1,5t-10a-7,5t=-7a-9t