How do you solve #3(x+ 5) +x=7#?

1 Answer
Tony B
Mar 8, 2016

Same thing with a slightly different twist

#x=-2#

Explanation:

Given#" "3(x+5)+x=7#

Multiply out the bracket

#color(brown)(" "3x+15+x=7)#

#color(brown)(" "4x+15=7)#

Subtract 15 from both sides

#color(brown)(" "4x=-8)#

Divide both sides by 4

#color(blue)(" "x=-2)#

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