Question

решите уравнения :а) ( 8+4х)*2=48; б) (40 - 4х):2 =16; в) (5х - 7)*5 = 15.

Answer 1

(8+4х)*2=48
16+8х=48
8х=48-16
8х=32
х=32:8
х=4

(40-4х):2=16
40-4х=16*2
40-4х=32
4х=40-32
4х=8
х=8:4
х=2

(5х-7)*5=15
25х-35=15
25х=35+15
25х=50
х=50:25
х=2

Answer 2

а)8х+16=48
8х=48-16=32
х=32÷8=4
б) (40-4х)÷2=16
40-4х=16*2=32
4х=40-32=8
х=8÷4=2
в) 25х-35=15
25х=15+35=50
х=50÷25=2