Question

1)3×-15=×+3 3)2(×+3)=×+13 5)3(×-2)=×+4

Answer 1

$1)3x - 15 = x + 3 \ 3x - 15 - x - 3 = 0 \ 2x - 18 = 0 \ 2x = 18 \ x = 18 div 2 = 9$
$3)2x + 6 = x + 13 \ 2x + 6 - x - 13 = 0 \ x - 13 = 0 \ x = 13$
$5)3(x - 2) = x + 4 \ 3x - 6 - x - 4 = 0 \ 2x - 10 = 0 \ 2x = 10 \ x = 10 div 2 = 5$

Answer 2

как будет 2×

Answer 3

2 умножить на x

Answer 4

2х

Answer 5

понятно

Answer 6

1) 3x-x=3+15
2x=18
x=9

2) 2x+6=x-13
2x-x=-13-6
x=-19


3) 3x-6=x+4
3x-x=4+6
2x=10
x=5