5x-(7+8+4x)=56 4x+(15-3x)+12=10 (21+x)-34=11 19+(13-7x+8x)=59 4x-(12-25+3x)=87...

Question

5x-(7+8+4x)=56
4x+(15-3x)+12=10
(21+x)-34=11
19+(13-7x+8x)=59
4x-(12-25+3x)=87
12-2x+3x-7=29 решите уравнение 5 кл

Answer 1

1. 5х-(7+8+4х) = 56
5х-7-8-4х = 56
х-15 = 56
х = 71

2. 4х+(15-3х)+12=10
4х+15-3х+12=10
х+27=10
х=-17

3.(21+х)-34=11
21+х-34=11
х-13=11
х=24

4. 19+(13-7х+8х)=59
19+13-7х+8х=59
32+х=59
х=27

5. 4х-(12-25+3х)=87
4х-12+25-3х=87
х-13=87
х=74

6. 12-2х+3х-7=29
5+х=29
х=24