解:解方程, 此方程的解为x = 4
15x - 2(3x - 8)-2(2×3)=40
15x - 2 × 3X - 2 × 8 - 2 × 6 = 40
15x - 6x + 16 - 12 = 40
9x + 4 = 40
9x = 40 - 4
9x = 36
x = 36 ÷ 9
x = 36 × 1/9
x = 36/9
∴x = 4
答:此方程的解为x = 4
15X-2(3X-8)-2(2X+3)=40
15X-6X+16-4X-6=40
5X+10=40
5X=40-10
5X=30
X=6
解:15x-2(3x-8)-2(2x+3)=40
15x-6x+16-4x-6=40
(15-6-4)x=40-16+6
5x=30
x=6
15X-2*(3X-8)-2*(2x +3)=40
15X-6X+16-4X-6=40
5X=30
X=6