Question

afla pe x din. 4x8+x=9x9-27, x-9x3=6x7+21, x+7x8=94-6x3, 6x9+x=6x4+8x8

Answer 1

4*8+x=9*9-27
32+x=81-27
32+x=54
x=54-32=22
x-9*3=6*7+21
x-27=42+21
x-27=63
x=27+63=90
x+7*8=94-6*3
x+56=94-18
x+56=76
x=76-56=20
6*9+x=6*4+8*8
54+x=24+64
54+x=88
x=88-54=34

Answer 2

4•8+x=9•9-27
32+x=81-27
32+x=54
x=54-32
x=22

x-9•3=6•7+21
x-27=42+21
x-27=63
x=63+27
x=90

x+7•8=94-6•3
x+56=94-18
x+56=76
x=76-56
x=20

6•9+x=6•4+8•8
54+x=24+64
54+x=88
x=88-54
x=34 •(punctul) înseamnă ori adică x