Question

Rezolvati ecuatiile:
1) 2(3x+5)-(x+14)=3(x-2)
2) 2(2x-3)+10-3(x+7)-19
3) 5(2x+3)-6(x+2)=2x+7
4) 3(2x-5)+13= 2(x-3)-16

Answer 1

1) 2(3x+5)-(x+14)=3(x-2)
6x+10-x-14=3x-6
6x-x-3x=14-10-6
2x=-2
x=-2:2
x= - 1

3) 5(2x+3)-6(x+2)=2x+7
10x+15-6x-12=2x+7
10x-6x-2x=7-15+12
2x=4
x=4:2
x=2

4) 3(2x-5)+13= 2(x-3)-16
6x-15+13=2x-6-16
6x-2x=15-13-6-16
4x=-20
x=-20:4
x=-5

2)2(2x-3)+10=3(x+7)-19
4x-6+10=3x+21-19
4x-3x=21-19+6-10
x=-2

Answer 2

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/robertinni