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aelitka1
@aelitka1
July 2022
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Решите уравнения:
1) 15,8-(2a+3,6):0,4=4,8
2) 2,3в+6в-3,8в+в=11
3) 1,5х+1,2+2х+0,8=2,7
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ivankalove64
1) 15,8-(2a+3,6)÷0,4=4,8
15,8-2a-3,6÷0,4=4,8
-2a= -15,8-3,6÷(-0,4)-4,8
-2a= -15,8+9-4,8
-2a= -11,6
a= -11,6÷(-2)
a= 5,8
2) 2,3в+6в-3,8в+в=11
9,3в-3,8=11
5,5в=11
в= 11÷5,5
в= 2
3) 1,5х+1,2+2х+0,8=2,7
1,5х+2х= 2,7-1,2-0,8
3,5х= 0,7
х= 0,7÷3,5
х= 0,2
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Answers & Comments
15,8-2a-3,6÷0,4=4,8
-2a= -15,8-3,6÷(-0,4)-4,8
-2a= -15,8+9-4,8
-2a= -11,6
a= -11,6÷(-2)
a= 5,8
2) 2,3в+6в-3,8в+в=11
9,3в-3,8=11
5,5в=11
в= 11÷5,5
в= 2
3) 1,5х+1,2+2х+0,8=2,7
1,5х+2х= 2,7-1,2-0,8
3,5х= 0,7
х= 0,7÷3,5
х= 0,2