Question

Va rog sa ma ajutati .

Answer 1

a)
5(3x-2)+3x-6(8x-13)=16(9-2x)-78
15x-10+3x-48x+78=144-32x-78
-30x+68=66-32x |:2
-15x+34=33-16x
-15x+16x=33-34
x=-1

b)
2(3x+4)-5(2x-3)-2=7(2x-4)+2(8-5x)+3x
6x+8-10x+15-2=14x-28+16-10x+3x
-4x+21=7x-12
7x+4x=21+12
11x=33 |:11
x=3

c)
2(3x-4)+5(6x-7)-3x=9(x+10)+11(x+12)+8
6x-8+30x-35-3x=9x+90+11x+132+8
33x-43=20x+230
33x-20x=230+43
13x=273 |:13
x=21

d)
3(6x-5)-2(4x+3)+13=-2(-4x+9)+2x-5(3x-2)
18x-15-8x-6+13=8x-18+2x-15x+10
10x-8=-5x-8
10x+5x=-8+8
15x=0
x=0

Answer 2

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