7
25
1+0+3 is the digit sum of 103
The answer is 1830.
26
7
The total sum of 4+5.23+3 = 12.23
9
The sum of 3x plus 2 and -4 plus 3 is 3x+1 if the equation is (3x+2)+(-4+3). If they are two separate questions, 3x+2 remains as itself while -4+3=-1.
25
1+0+3 is the digit sum of 103
3 plus 4 equals 7. To check your answer, use a calculator, or your fingers.
The answer is 1830.
26
4
4
The number is 4 (4+3) * (4+3) = 49 (4+2) * (4+2) = 36 49 - 36 = 13