Question

simplify variable expression

1). 4a-2+5
2). 2b+a+1-b+3
3). 4x + 5 - x + 4
4). 2a-5b +3+a -2
5). 9x-2+3-4x
6). 12a-4b +5-4a-4
7).6z +5z +8z - 2z
8). 9x +12 -5x +12 - 1
9). 15b-12c +10b-10c +15
10) . 5x+7x-3x -10+15​

Answer 1

Answer:

1). 3

2) 1

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Answer 2

3 is answer is right is ok