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Ex. 1 si 2, multumesc!

Ex 1 Si 2 Multumesc class=

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Stefi1807
4x+7=x-3
4x-x=7+3
3x=10
x= 10 \3€Q
1.
a) 4x+7=x-3/+3
4x+7+3=x
4x+10=x/-10
4x=x-10/+x
5x=10/:5
x=2
b)3(2x+1)=5x-2
6x+3=5x-2/+2
6x+3+2=5x
6x+5=5x/-5
6x=5x-5/-5x
x=5