Question

Determine o valor de × a)4(2×+3)=5(×+3) b)2(7×+2)+12(×+1)=2 c)4(×-1)+2(3×+4)=6 mim ajudem pr favor

Answer 1

a)4(2×+3)=5(×+3)
8x+12=5x+15
8x-5x=15-12
3x=3
x=3/3
x=1

b)2(7×+2)+12(×+1)=2
14x+2+12x+12=2
14x+12x=2-2-12
24x=-12
x=-12/24
x=-1/2



c)4(×-1)+2(3×+4)=6
4x-4+6x+8=6
4x+6x=6+4-8
10x=2
x=2/10
x=1/5