Respuesta:
A) 7x+5x=25+11
12x=36
x=36/12
x=3
B) 4x+16=6x-18
4x -6x=-18 -16
-2x=-34
x=34/2
x=17
C) 5x+7+12=4x-6
5x -4x=-6 -7 -12
1x=-25
x=-25/1
x=-25
Explicación paso a paso:
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Respuesta:
A) 7x+5x=25+11
12x=36
x=36/12
x=3
B) 4x+16=6x-18
4x -6x=-18 -16
-2x=-34
x=34/2
x=17
C) 5x+7+12=4x-6
5x -4x=-6 -7 -12
1x=-25
x=-25/1
x=-25
Explicación paso a paso: