5а+2а=35

To solve the equation \( 5a + 2a = 35 \), you can combine the like terms on the left side: \[ (5a + 2a) = 35 \] This simplifies to: \[ 7a = 35 \] Next, divide both sides by 7 to isolate \( a \): \[ a = \frac{35}{7} \] So, \[ a = 5 \] The solution is \( a = 5 \).