Question

Błagam pomocy tylko proszę o obliczenia:
a) -x + 7 = 5x + 1
b) 6y + 30 = -2y - 2
c) 4z + 35 = -1z + 5
d) 12x - 10 = -6x + 8
e) 2x - 2 = 4x - 2
f) -2z - 12 = -3z - 13
Daję NAJ

Answer 1

A)-x+7=5x+1 /+x
7=6x+1 /-1
6=6x /:6
x=1
b)6y+30=-2y-2 /+2y
8y+30=-2 /-30min
8y=-32 /:8
y=-4
c)4z+35=-1z+5 /+1z
5z+35=5 /-35
5z=-30 /:5
z=-6
d)12x-10=-6x+8 /+6x
18x-10=8 /+10
18x=18 /:18
x=1
e)2x-2=4x-2 /-4x
-2x-2=-2 /+2
-2x=0 /:-2
x=0
f)-2z-12=-3z-18 /+3z
z-12=-18x /+12
z=-6

Answer 2

A) -x+7=5x+1
-x-5x=-7+1
-6x=-6/:(-6)
x=1
b)6y+30=-2y-2
6y+2y=-2-30
8y=-32/:8
y=-4
c)4z+35=-1z+5
4z+z=5-35
5z=-30/:5
z=-6
d)12x-10=-6x+8
12x+6x=8+10
18x=18/:18
x=1
e)2x-2=4x-2
2x-4x=2-2
-2x=0/:(-2)
x=0
f) -2z-12=3z-13
-2z-3z=-13+12
-5z=-1/:(-5)