jaehinc
jaehinc
17-09-2018
Mathematics
contestada
Solve the equation: 3(-x+4)=20x-7
Respuesta :
DuckyMoMo32
DuckyMoMo32
17-09-2018
1 Regroup terms
3(4−x)=20x−7
2 Expand
12−3x=20x−7
3 Add 3x to both sides
12=20x−7+3x
4 Simplify
20x−7+3x to 23x−7
12=23x−7
5 Add 7 to both sides
12+7=23x
6 Simplify 12+7 to 19
19=23x
7 Divide both sides by 23
19/23 =x
8 Switch sides
x= 19/23
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