Matematyka zbiór zadań zadanie 35 strona 89
a)5(x-2)+2x
b)-4(2y+1)+y
c)5y-3(y-1
d)(12x-4):4+1+x
e)-3(x-7)-(x+2)
f)-(x+2)-3(2x-4)+2(x-1)
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a ) 5x-10+2x= 7x = 10
x=1 3/10
b)-8y-4+y
-7y-4/(:-1)
y=
c)5y-3y-3
2y=-3
y=1 1/2
d) 3x-1+x
4x = 1
x = 0.4
e)-3x-21-x-2
-4x = -23(:-1)
x=7 2/23
f) -x-2-6x-12+2x-1
-5x = -15
x = 3
Mam nadzieje ze pomoglem :)
a) 5x-10 + 2x = 3x-10
b) -8y + (-1) + y = -7y - 1
c) 5y- 3y - 3 = 2y-3
d) 3x +1 + x = 4x + 1
e) -3x - (-21) - x - 2 = -2x - 19
f) -x -2 - 6x - 12 + 2x - 2 = 7x +8
Prawie na 100% dobrze :)