Question

Can someone help me understand this •_•

Answer 1

`A. \: 3x + 6 = 4 x \: + \: 7 \: is \: equivalent \: with \: option \: 4. \\ B. \: 3(x + 6) = 4 x+ 7 \: is \: equivalent \: with \: option \: 2.\\ C.\: 4x + 3x = 7 - 6 \: is \: equivalent \: with \: option \: 5.`

Explanation:

`all \: you \:need \: to \: do \: is \: to \: identify \: the \\ \: equations \: that \: have \: the \: same \: value \: of \: x. \\ A. \\ \: 3x + 6 = 4 x+ 7 \\ x = 6 - 7 \\ x = - 1. \\ \: so \: 3x + 6 = 4 x+ 7 \: is \: equal \: with \: \: option \: 4.\\ B. \\ 3(x + 6) = 4x + 7 \\ 3x + 18 = 4x + 7 \\ x = 18 - 7 \\ x = 11. \\ \: so \: 3(x + 6) = 4 x+ 7 \: is \: equal \: with \: \: option \: 2. \\ C .\\ 4x + 3x = 7 - 6 \\ 7x = 1 \\ x = (1)/(7) \\ so \: 4x + 3x = 7 - 6\: is \: equal \: with \: \: option \: 5.`

Answer 2

A 5

solution:7x=1

divide both side buy 7

7x/7=1/7

x=0.143