Question

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Answer 1

a) 3x+1=5
3x=5-1
3x=4
$x=\frac{4}{3}$

b)
3x+2=5x+6
3x-5x=6-2
-2x=4
x=4:(-2)
x=-2

c)
2(x-3)=3(x+2)
2x-6=3x+6
2x-3x=6+6
-x=12
x=-12

d)
4x+11+5(x+4)=2x+3
4x+11+5x+20=2x+3
9x+31=2x+3
9x-2x=3-31
7x=-28
x=-28:7
x=-4