2026年学霸计算达人七年级数学上册苏科版第62页答案
1. 解方程:
(1) $9x - 5 = 4 - x$;
(2) $5x - 4 = -7x + 8$;
(3) $0.6 + 2x = 1.4 - 3x$;
(4) $7 - 3.3x = 32 - 2.3x$;
(5) $-\frac{5}{4}x + 6 = x - 12$;
(6) $x + 5 = \frac{1}{2}x + 3 - 2x$;
(7) $\frac{x}{2} - 4 = 2x + 3 - \frac{5}{2}x$;
(8) $y - 1 - \frac{1}{2}y = 3 - 0.5y - 2$。

答案

(1)x=0.9
(2)x=1
(3)x=0.16
(4)x=-25
(5)x=8
(6)x=-0.8
(7)x=7
(8)y=2
2. 解方程:
(1) $3(x+1)=9$;
(2) $5x+2=3(x+2)$.

答案

(1)x=2
(2)x=2