Question

A. 2x + 3 = 121
B. 3(x - 7) = 48
C. 5x + 2(x - 3) = 9 1
D. (x + 2): 7 = 3 1​

Answer 1

Răspuns:

A. 59

B.

Explicație pas cu pas:

• A : 2x=121-3
• 2x=118
• X=118:2
• X=59
• B : 48:3
• 16
• 16+7
• X=23
• C : 5x+2x=7x
• 91*7
• 637
• X=91
• D : 31*7
• 217-2
• X=216

Answer 2

Răspuns:

A. 2x+3=121

2x=121-3

2x=118

x=118:2

x=59;

B. 3(x-7)=48

x-7=48:3

x-7=16

x=16+7

x=23

D. (x+2):7=31

x+2=31×7

x+2=217

x=217-2

x=215