Question

(2×3+5×f)-3×2=4×5
a×4-15=(80-75)×5
​

Answer 1

Răspuns:

4,10.

Explicație pas cu pas:

(2×3+5×f)-3×2=4×5

(6+5×f)-6=20

(6+5×f)=20+6

(6+5×f)=26

5×f=26-6

5×f=20

f=20:5

f=4

a×4-15=(80-75)×5

a×4-15=5×5

a×4-15=25

a×4=25+15

a×4=40

a=40:4

a=10