Odpowiedź:
a) 6x-2x = +4+10
4x = 14 |÷4
x = 3,5
b) 11x = 13 |÷11
x = 0.8461538462 (?)
c) 3x-18 = 2x+20
3x-2x = +18+20
x = 38
d) 4x-8 = 2x
-8 = 2x-4x
-8 = -2x |÷(-2)
x = 4
e) 2x-12 = 3x+12
2x-3x = +12+12
-x = 24 |÷(-1)
x = -24
f) -2x-x-4x = -8-6
-7x = -14 |÷(-7)
x = 2
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Odpowiedź:
a) 6x-2x = +4+10
4x = 14 |÷4
x = 3,5
b) 11x = 13 |÷11
x = 0.8461538462 (?)
c) 3x-18 = 2x+20
3x-2x = +18+20
x = 38
d) 4x-8 = 2x
-8 = 2x-4x
-8 = -2x |÷(-2)
x = 4
e) 2x-12 = 3x+12
2x-3x = +12+12
-x = 24 |÷(-1)
x = -24
f) -2x-x-4x = -8-6
-7x = -14 |÷(-7)
x = 2