同類項をまとめる(小数)1(6問)
同類項をまとめて簡単にせよ。
0.2x-0.5x
解答○ ×-1.2a+0.9a-a
解答○ ×a-0.5b+1.8a-0.9b
解答○ ×0.9x-1.2-0.8x
解答○ ×-2a+0.4+3.5a-1.3
解答○ ×-0.2x+1.7y+2.1-0.8x-0.9y+1.5
解答○ ×問題と解答
0.2x-0.5x-0.3x -1.2a+0.9a-a-1.3a a-0.5b+1.8a-0.9b2.8a-1.4b 0.9x-1.2-0.8x0.1x-1.2 -2a+0.4+3.5a-1.31.5a-0.9 -0.2x+1.7y+2.1-0.8x-0.9y+1.5-x+0.8y+3.6
