Question

6x+7x=91，求x

Answer 1

求得x的值，可以将左边都变成只有x和x前面系数的式子，右边变成一个数字，即13 x=91，X=91÷13，所以这个时候就可以求得x的值等于七，所以x=7。

Answer 2

1. 2x+8=16, x=42, x÷5=10, x=503, x+7x=88, x=114, 9x-3x=66, x=115, 6x-8=4, x= 26, 5x+x=9, x=1.57, 10x+90=290, x=208, 7x+7=14, x=19, 6x-6=0, x=110, 5x+6=11, x= 111, 2x -8=10, x=912, 12x-8=4, x=113, (x-5)÷6=7, x=4714, 3x+7=28, x=715, 3x-7= 26, x=1116, 9x-x=16, x=217, 24x+x=50, x=218, 7x-8=20, x=419, 3x-9=30, x=1320, 6x+6= 12, x=121, 3x-3 =12, x=522, 5x-3x=4, x=223, 2x+16=19, x=1.524, 5x+8=19, x=2.225, 14-6x= 8, x=126, 15+6x=27, x=227, 5-8x=4, x=0.12528, 7x+8=15, x=1

Answer 3

6x+7x=91,x=91/13=7,原来的分数就是6*7/（7*7）=42/49

Answer 4

6x+7x=91
解：合并同类项，得
13x=91
两边同除以13，得
x=7

Answer 5

原式子等于13x = 91，解得x = 7